[compatibility] Open pre 9.5 projects - Insert pre/post slider to end of chain

Hi, this is one is a compatibility concern for opening projects. I have noticed in many projects I open from pre v9.5 that the pre/post (green horizontal bar) is often placed BEFORE the previous plugins. This causes immediate concern for compatibility and I hope that this can be addressed in next patch.

Similarly, I’ve noticed a issue where sends which were previously set to ‘pre-fader’ are now set to ‘post-fader’ when opening pre 9.5 projects. Not cool for compatibility.