It is possible to save all segment pairs to an assigned TM (again).
To do this go to the language resources overview, go to your TM and click on the action icon "associated tasks".
Then select the task(s) you want to re-import and click "re-import".
To see, if the re-import is finished, go to the task overview to your task and refresh the task overview. If the task is still "work in progress" with the tool tip pointing to the "re-import", then the re-import is still running.