An error occurred during the merge process. The merge could not be performed.
General ODBC Error [Microsoft][ODBC SQL Server Driver]Warning:
Partial insert/update. The insert/update of a text or image column(s)
did not succeed.
[Microsoft][ODBC SQL Server Driver][SQL Server]WRITETEXT is not
allowed because the table is being tracked for change tracking.
This error is caused by image fields on actions. To resolve this error you must remove the attachment on the action and then merge the records. Once the records have been merged the attachment can be added again if needed.
Try merging in the other direction. For example, if merging constituent A into constituent B generates this error. Try merging constituent B into constituent A.