Repo Merge error

Good morning,

For the last week, I have been trying to troubleshoot an issue we are having with our ER Studio Data Architecture version 17.  We are unable to check in any diagrams/data dictionaries and we are getting a Repository Merge error, operation halting.  (Id=3).  In the repo_merge_error document, we are seeing this. 

Missing Node Exception - occurs when diagram node cannot look up a parent node

Missing Parent GUID: 197027ef240f4f01bb24a7c27eb43edb
Child Section ID:  DIAGRAM (-1)
Child GUID:  

Does anyone have any idea what to look for or what needs to be done?  I opened a ticket with Idera but they have yet to respond to me.