When errors like this message are reported: Failed to refresh cubes(MoveMember: 0): Could not move member (source, destination) , what is exactly being made? Source and destination are 2 members from the same dimension. When source is being moved to destination, what is being changed? Their order? Is there any documentation where I can read about the technical mechanism of moving members?
I take it you are talking about planning and a version before 9.3.1
This is the sort of error message you get from planning when the outlines are too far out of sync and it has problems moving members.
Before 9.3 planning had a really bad mechanism at keeping the outlines in sync, if not managed correctly it can be very messy to get it all back in sync.