MS Project won’t save baseline

For one single programme I have a problem that MS Project (2000) won’t save the baseline values. I can manually copy the rows from start/finish/duration into baseline start/finish/durations so no overall problem, but it won’t update automatically when I try to do a "Save Baseline - Entie Project".

There is no problem clearing the entire baseline and I have no problems saving the baseline in other programmes, just this one.

Have tried to save to MPD format and then back to MPP and also tried to make a new file with same base calendar, imported the problem file with "Link to Project" unchecked, outdented all activities one level, deleted ID#1, thereby getting a copy of old file with same data, but again without luck.

Any ideas where the problem could be?

Best regards,

Bo