diff --git a/src/Fieldtypes/ImportMappingsFieldtype.php b/src/Fieldtypes/ImportMappingsFieldtype.php
index 42b1dba..ea9e6d4 100644
--- a/src/Fieldtypes/ImportMappingsFieldtype.php
+++ b/src/Fieldtypes/ImportMappingsFieldtype.php
@@ -90,18 +90,17 @@ private function fields(): Collection
         $import = $this->field()->parent();
 
         $row = match ($import->get('type')) {
-            'csv' => (new Csv($import))->getItems($import->get('path'), [])->first(),
-            'xml' => (new Xml($import))->getItems($import->get('path'), [])->first(),
+            'csv' => (new Csv($import))->getItems($import->get('path'))->first(),
+            'xml' => (new Xml($import))->getItems($import->get('path'))->first(),
         };
 
         return $import->destinationBlueprint()->fields()->all()
             ->reject(function (Field $field) {
                 $transformer = Importer::getTransformer($field->type());
 
-                return in_array($field->type(), ['section', 'grid', 'replicator', 'group'])
-                    && ! $transformer;
+                return ! $transformer && in_array($field->type(), ['section', 'grid', 'replicator', 'group']);
             })
-            ->mapWithKeys(function (Field $field) use ($row) {
+            ->mapWithKeys(function (Field $field) use ($import, $row) {
                 $fields = [];
 
                 if ($transformer = Importer::getTransformer($field->type())) {
@@ -119,7 +118,7 @@ private function fields(): Collection
                         'clearable' => true,
                     ],
                     ...$fields,
-                ])->setHandle('mappings-'.$field->handle());
+                ])->setHandle("import-mappings-{$field->handle()}".md5($import->config()->toJson()));
 
                 return [$field->handle() => $blueprint->fields()];
             });
diff --git a/src/Http/Controllers/ExtractFromImportFields.php b/src/Http/Controllers/ExtractFromImportFields.php
index 59427ce..efd924d 100644
--- a/src/Http/Controllers/ExtractFromImportFields.php
+++ b/src/Http/Controllers/ExtractFromImportFields.php
@@ -4,9 +4,15 @@
 
 trait ExtractFromImportFields
 {
-    protected function extractFromFields($import, $fields)
+    protected function extractFromFields($import, $blueprint)
     {
-        $fields = $fields->preProcess();
+        $fields = $blueprint
+            ->fields()
+            ->setParent($import)
+            ->addValues($import->config()->merge([
+                'name' => $import->name(),
+            ])->all())
+            ->preProcess();
 
         $values = $fields->values();
 
diff --git a/src/Http/Controllers/ImportController.php b/src/Http/Controllers/ImportController.php
index 416ec5c..dd39b82 100644
--- a/src/Http/Controllers/ImportController.php
+++ b/src/Http/Controllers/ImportController.php
@@ -172,6 +172,7 @@ public function update(Request $request, Import $import)
                 'path' => $path,
                 'destination' => collect($values['destination'])->filter()->all(),
                 'strategy' => $values['strategy'],
+                'source' => $values['source'],
                 'mappings' => $values['mappings'],
                 'unique_field' => $values['unique_field'],
             ]));
@@ -185,7 +186,7 @@ public function update(Request $request, Import $import)
         // We need to refresh the blueprint after saving, so the field conditions are up-to-date.
         $blueprint = $import->blueprint();
 
-        [$values, $meta] = $this->extractFromFields($import, $fields);
+        [$values, $meta] = $this->extractFromFields($import, $blueprint);
 
         return [
             'data' => array_merge((new ImportResource($import->fresh()))->resolve()['data'], [
diff --git a/src/Imports/Blueprint.php b/src/Imports/Blueprint.php
index 127f586..44dc4ee 100644
--- a/src/Imports/Blueprint.php
+++ b/src/Imports/Blueprint.php
@@ -8,6 +8,8 @@
 use Statamic\Facades;
 use Statamic\Facades\Collection;
 use Statamic\Facades\Site;
+use Statamic\Importer\Sources\Csv;
+use Statamic\Importer\Sources\Xml;
 
 class Blueprint
 {
@@ -78,7 +80,7 @@ function (string $attribute, mixed $value, Closure $fail) {
                                                 'field' => [
                                                     'type' => 'button_group',
                                                     'display' => __('Data Type'),
-                                                    'instructions' => __('Choose what type of data are you importing'),
+                                                    'instructions' => __('Choose what type of data are you importing.'),
                                                     'width' => 50,
                                                     'options' => [
                                                         ['key' => 'entries', 'value' => __('Entries')],
@@ -159,6 +161,7 @@ function (string $attribute, mixed $value, Closure $fail) {
                             'display' => __('Configuration'),
                             'instructions' => __('importer::messages.configuration_instructions'),
                             'fields' => [
+                                ...static::getSourceFields($import),
                                 [
                                     'handle' => 'mappings',
                                     'field' => [
@@ -206,6 +209,33 @@ function (string $attribute, mixed $value, Closure $fail) {
         ]);
     }
 
+    private static function getSourceFields(?Import $import = null): array
+    {
+        if (! $import) {
+            return [];
+        }
+
+        $fields = match ($import->get('type')) {
+            'csv' => (new Csv($import))->fields(),
+            'xml' => (new Xml($import))->fields(),
+        };
+
+        if ($fields->items()->isEmpty()) {
+            return [];
+        }
+
+        return [[
+            'handle' => 'source',
+            'field' => [
+                'type' => 'group',
+                'hide_display' => true,
+                'fullscreen' => false,
+                'border' => false,
+                'fields' => $fields->items()->all(),
+            ],
+        ]];
+    }
+
     private static function buildFieldConditions(Import $import): array
     {
         $conditions = [
diff --git a/src/Sources/AbstractSource.php b/src/Sources/AbstractSource.php
index b8bdac6..7bcd1af 100644
--- a/src/Sources/AbstractSource.php
+++ b/src/Sources/AbstractSource.php
@@ -2,10 +2,31 @@
 
 namespace Statamic\Importer\Sources;
 
+use Illuminate\Support\Arr;
+use Illuminate\Support\LazyCollection;
+use Statamic\Extend\HasFields;
 use Statamic\Importer\Contracts\Source;
 use Statamic\Importer\Imports\Import;
 
 abstract class AbstractSource implements Source
 {
+    use HasFields;
+
     public function __construct(public ?Import $import = null) {}
+
+    abstract public function getItems(string $path): LazyCollection;
+
+    public function fieldItems(): array
+    {
+        return [];
+    }
+
+    protected function config(?string $key = null, $default = null): mixed
+    {
+        if (is_null($key)) {
+            return collect($this->import->get('source'));
+        }
+
+        return Arr::get($this->import->get('source'), $key, $default);
+    }
 }
diff --git a/src/Sources/Csv.php b/src/Sources/Csv.php
index 67de359..eb0861b 100644
--- a/src/Sources/Csv.php
+++ b/src/Sources/Csv.php
@@ -9,6 +9,20 @@ class Csv extends AbstractSource
 {
     public function getItems(string $path): LazyCollection
     {
-        return SimpleExcelReader::create($path)->getRows();
+        return SimpleExcelReader::create($path)
+            ->useDelimiter($this->config('csv_delimiter', ','))
+            ->getRows();
+    }
+
+    public function fieldItems(): array
+    {
+        return [
+            'csv_delimiter' => [
+                'display' => __('CSV Delimiter'),
+                'instructions' => __('Specify the delimiter to be used when reading the CSV file. You will need to save the import for the options to be updated.'),
+                'type' => 'text',
+                'default' => ',',
+            ],
+        ];
     }
 }
diff --git a/tests/Imports/UpdateImportTest.php b/tests/Imports/UpdateImportTest.php
index df8a277..d890b14 100644
--- a/tests/Imports/UpdateImportTest.php
+++ b/tests/Imports/UpdateImportTest.php
@@ -64,6 +64,7 @@ public function can_update_an_import()
                 'name' => 'Old Posts',
                 'destination' => ['type' => 'entries', 'collection' => ['posts']],
                 'strategy' => ['create', 'update'],
+                'source' => ['csv_delimiter' => ','],
                 'mappings' => [
                     'title' => ['key' => 'Title'],
                     'slug' => ['key' => 'Slug'],
@@ -95,6 +96,7 @@ public function can_replace_the_file()
                 'file' => ['123456789/latest-posts.csv'],
                 'destination' => ['type' => 'entries', 'collection' => ['posts']],
                 'strategy' => ['create', 'update'],
+                'source' => ['csv_delimiter' => ','],
                 'mappings' => [
                     'title' => ['key' => 'Title'],
                     'slug' => ['key' => 'Slug'],