Diagnosis
The system attempts to adjust the InfoSet automatically if it was foundthat a field still exists in the InfoSet but not in the correspondingInfoProvider during a comparison of InfoSets.
This will work providing that the corresponding attribute is notconnected to another attribute via a link.
Automatic adjustment cannot take place if the attribute is not linked.

Procedure
First access the InfoSet in change mode and remove the link. Aftersaving successfully, you can restart the comparison from the initialscreen for transaction rsiset. Automatic adjustment ought to work now.