I have a SiteCollection where in the NintexWorkflowGallery nearly all workflows (~50 workflows) are duplicated (some workflows has 3 versions). All duplicates have the same WorkflowId. When i remove one of the copie, all copies and the original will be removed. When i restore an workflow with the same name from a backup, all 3 copies are back. The copies was probably create on an backup/restore from the nintex database.
Is there a way to remove the copies without delete everything and restore with new names?
