if you have already changed the tempo in step record the easiest solution is to simply switch tempo to OFF in the panel memory expand mode filter.

The song will then stay at the new tempo with no glitches.

The advantage of this method is that you can change the tempo again for fine tuning for the whole song with only one operation, rather than having to re-save a whole series of panel memories.

Confusingly tempo is the one thing that panel write does not affect...