FS no longer a valid relationship on a start or finish milestone
After upgrade to Primavera 20.12.7 it appears that the only relationship that can be used as a successor to a start milestone is SS and the only relationship that can be used as predecessor to a finish milestone is FF. The milestones are created in the normal way using activity type "start milestone" or "finish milestone" & the FS relationship has always been a valid as long as the milestone was not formerly some other type of activity. Now the system won't allow it & is in fact, changing past relationships to SS or FF that were previously perfectly valid.
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