fix: caller splitting for old cases (#1741) (#1742)

backend/svs/models/jobs.py

@@ -4,6 +4,7 @@
 from itertools import islice
 import json
 import os
+import re
 import subprocess
 from tempfile import TemporaryDirectory
 import traceback
@@ -346,7 +347,7 @@ def _inner(tmpdir):
             records = StructuralVariant.objects.filter(case_id=case_id, set_id=variant_set_id)
             callers = set()
             for record in records:
-                for caller in record.caller.split(";"):
+                for caller in re.split(r"[+;]", record.caller):
                     callers.add(caller)
 
             _write_header(outputf, filter_job.case, list(sorted(callers)))