diff --git a/packages/cli/__tests__/zostso/__unit__/issue/command/__snapshots__/Command.handler.unit.test.ts.snap b/packages/cli/__tests__/zostso/__unit__/issue/command/__snapshots__/Command.handler.unit.test.ts.snap
index 68d1652a6..88bd08530 100644
--- a/packages/cli/__tests__/zostso/__unit__/issue/command/__snapshots__/Command.handler.unit.test.ts.snap
+++ b/packages/cli/__tests__/zostso/__unit__/issue/command/__snapshots__/Command.handler.unit.test.ts.snap
@@ -36,6 +36,15 @@ exports[`issue command handler tests should issue command 1`] = `
       },
       undefined,
       Object {
+        "addressSpaceOptions": Object {
+          "account": "fake",
+          "characterSet": undefined,
+          "codePage": undefined,
+          "columns": undefined,
+          "logonProcedure": undefined,
+          "regionSize": undefined,
+          "rows": undefined,
+        },
         "isStateful": undefined,
         "suppressStartupMessage": undefined,
       },
diff --git a/packages/cli/src/zostso/issue/command/Command.handler.ts b/packages/cli/src/zostso/issue/command/Command.handler.ts
index c242a8182..42e939301 100644
--- a/packages/cli/src/zostso/issue/command/Command.handler.ts
+++ b/packages/cli/src/zostso/issue/command/Command.handler.ts
@@ -32,6 +32,7 @@ export default class Handler extends ZosTsoBaseHandler {
                 isStateful: params.arguments.stateful,
                 suppressStartupMessage:
                     params.arguments.suppressStartupMessages,
+                    addressSpaceOptions: this.mTsoStart
             }
         );
 
diff --git a/packages/zostso/__tests__/__system__/api.TsoIssue.system.test.ts b/packages/zostso/__tests__/__system__/api.TsoIssue.system.test.ts
index ed48b1dfe..c17ebef46 100644
--- a/packages/zostso/__tests__/__system__/api.TsoIssue.system.test.ts
+++ b/packages/zostso/__tests__/__system__/api.TsoIssue.system.test.ts
@@ -16,7 +16,8 @@ import * as fs from "fs";
 import { ITestEnvironment } from "@zowe/cli-test-utils";
 import { TestEnvironment } from "../../../../__tests__/__src__/environment/TestEnvironment";
 import { ITestPropertiesSchema } from "../../../../__tests__/__src__/properties/ITestPropertiesSchema";
-
+import { IIssueTsoCmdParms } from "../../src";
+import { IIssueTsoCmdOpts } from "../../src/doc/input/IIssueTsoCmdOpts";
 let testEnvironment: ITestEnvironment<ITestPropertiesSchema>;
 let systemProperties: ITestPropertiesSchema;
 let REAL_SESSION: Session;
@@ -24,7 +25,8 @@ let ACCOUNT_NUMBER: string;
 
 let START_PARAMS: IStartTsoParms;
 let ISSUE_PARAMS: IIssueTsoParms;
-
+let COMMAND_PARAMS: IIssueTsoCmdParms;
+let AS_OPTIONS: IIssueTsoCmdOpts;
 describe("IssueTso.issueTsoCommand", () => {
 
     beforeAll(async () => {
@@ -50,9 +52,18 @@ describe("IssueTso.issueTsoCommand", () => {
             accountNumber: ACCOUNT_NUMBER,
             startParams: START_PARAMS
         };
-
+        COMMAND_PARAMS = {
+            command: "TIME"
+        }
+        AS_OPTIONS = {
+            addressSpaceOptions: START_PARAMS
+        }
+    });
+    afterAll(async () => {
+        AS_OPTIONS = {
+            addressSpaceOptions: START_PARAMS
+        }
     });
-
     it("should display time", async () => {
         let error: ImperativeError;
         let response: IIssueResponse;
@@ -81,4 +92,29 @@ describe("IssueTso.issueTsoCommand", () => {
         const regex = fs.readFileSync(__dirname + "/__regex__/d_time.regex").toString();
         expect(new RegExp(regex, "g").test(response.commandResponse.toString())).toBe(true);
     });
+    it("should display time - issueTsoCmd() - new API - pass", async () => {
+        let error: ImperativeError;
+        let response: IIssueResponse;
+        try {
+            response = await IssueTso.issueTsoCmd(REAL_SESSION, "TIME", AS_OPTIONS);
+        } catch (thrownError) {
+            error = thrownError;
+        }
+        expect(error).toBeUndefined();
+        expect(response).toBeDefined();
+        const regex = fs.readFileSync(__dirname + "/__regex__/d_time.regex").toString();
+        expect(new RegExp(regex, "g").test(response.commandResponse.toString())).toBe(true);
+    });
+    it("should fail - issueTsoCmd() - 404 error", async () => {
+        REAL_SESSION.ISession.basePath = "/bad/path/to/nothing"
+        let error: ImperativeError;
+        let response: IIssueResponse;
+        try {
+            response = await IssueTso.issueTsoCmd(REAL_SESSION, "TIME", AS_OPTIONS);
+        } catch (thrownError) {
+            error = thrownError;
+        }
+        expect(error).toBeDefined();
+        expect(response).toBeUndefined();
+    });
 });
diff --git a/packages/zostso/__tests__/__unit__/IssueTso.unit.test.ts b/packages/zostso/__tests__/__unit__/IssueTso.unit.test.ts
index fe40d75fb..3404c6502 100644
--- a/packages/zostso/__tests__/__unit__/IssueTso.unit.test.ts
+++ b/packages/zostso/__tests__/__unit__/IssueTso.unit.test.ts
@@ -140,6 +140,9 @@ describe("TsoIssue issueTsoCommand - failing scenarios", () => {
         expect(error).toBeDefined();
     });
     it("should fail when StartTSO fails", async () => {
+        jest.spyOn(CheckStatus, "isZosVersionGreaterThan").mockReturnValue(
+            Promise.resolve(false)
+        );
         let error: ImperativeError;
         let response: ISendResponse;
 
@@ -168,6 +171,9 @@ describe("TsoIssue issueTsoCommand - failing scenarios", () => {
 
 describe("TsoIssue issueTsoCommand - Deprecated API", () => {
     it("should succeed", async () => {
+        jest.spyOn(CheckStatus, "isZosVersionGreaterThan").mockReturnValue(
+            Promise.resolve(false)
+        );
         (StartTso.start as any) = jest.fn(() => {
             return new Promise((resolve) => {
                 process.nextTick(() => {
diff --git a/packages/zostso/src/IssueTso.ts b/packages/zostso/src/IssueTso.ts
index 90541a37b..c9f12525e 100644
--- a/packages/zostso/src/IssueTso.ts
+++ b/packages/zostso/src/IssueTso.ts
@@ -36,9 +36,8 @@ export class IssueTso {
         let command: string | IIssueTsoCmdParms;
         let version: string;
         opts = opts || {};
-
         let useNewApi =
-        opts.addressSpaceOptions == null &&
+        opts.addressSpaceOptions == null ||
             await CheckStatus.isZosVersionGreaterThan(
                 session,
                 ZosmfConstants.VERSIONS.V2R4
@@ -78,8 +77,6 @@ export class IssueTso {
         }
         // Deprecated API Behavior [former issueTsoCommand() behavior]
         if (opts.addressSpaceOptions != null || !useNewApi) {
-            const profInfo = ImperativeConfig.instance.config.api.profiles.defaultGet("tso");
-            opts.addressSpaceOptions = { ...opts.addressSpaceOptions, ...profInfo};
             command =
                 typeof commandInfo === "string"
                     ? commandInfo