Deleted submissions don't get removed from DDS

Hi!

I'm having issues deleting form submissions from the DDS. Submissions are stored in the tblBigTable with a store name of 'FormData_guid'. I use the statement below for deleting submission data from the DDS.

SubmissionInfo is populated from SubmitActionResult.Data and formIdentity is created with new FormIdentity(formInfo.FormGuid, submissionInfo.FormLanguage). They seem to point to the right data, but apparently I'm missing something because the submission data (records) remain in the table and the DeleteSubmissionData doesn't throw any errors.

FormDataRepository.DeleteSubmissionData(formIdentity, new[] { submissionInfo.SubmissionId.ToString() });

Any ideas would be greatly appreciated :)