Hmmm - we have made changes here. These now enable you to copy from one PeakList to multiple other ones in one go. However, I don’t seem to be able to replicate the hanging.
Can you give more details of what you are doing, please? Are you copying one PL to one other or to multiple other ones? Are you doing this by dragging a PL into a SpecDisplay? Or are you using Spectrum/Copy Peak Lists… or shortcut CL? What options are you selecting?
Thanks,
Vicky