The problem:
During reimport some segments can fail to be reimported
Such segments can be identified by log record E1306 - OpenTM2: could not save segment to TM. The error can occur because of different reason, typically it is because memory is busy and connector reached maximum waiting time for update.
Thus we have missing segments in memory, despite reimport is done.

Solution:
Need to add triggering reimport process again for the segments that fail to reimport in current reimport session.
Also need to add a migration script to trigger reimporting tasks having failed segments.
Question/input from Marc: Was the failure to reimport some segments also logged in the task log? Then we can do that for all still existing tasks to reimport them, where something failed.