Move Objects in the project layer only for layout layer

When creating scores for an entire orchestra, I find it is best to put all the general direction in the project layer ( e.g. the ritt… rall…, rehersal marks, general comments, chords etc…). When creating seperate scores for individual instruments , all the general stuff is there already.
There is however one big issue i constantly run into. In the case you have to move a project layer object, because it simply does not fit in one of the individual scores (e.g. comments in multy measure rests), it moves also in all the other scores. So i have to re-check all the scores over and over again.

So my question is:
Is there a way to move a project layer object, only for a specific Layout,
Or is there a way to move an object from the project layer to the Layout layer?

Anyone?