It would be great to have an export/import feature for constraints as well. Then one could for example "merge" two timetables (separate fet-files) without re-entering constraints.
To do the export/import of the constraints would be a long task for me, and I am not sure this would be what you need.
If the id-s of the activities are different in the two files, you can simply get the .fet XML code from one file and copy/paste it to the other .fet XML file. I can do that for you if you send me the two files.
Thank you for this suggestion and your offer!
I guess I will enter the starting times using the custom version (http://lalescu.ro/liviu/fet/forum/index.php?topic=2502.0 (http://lalescu.ro/liviu/fet/forum/index.php?topic=2502.0)).