Ken Burns Aspect Ratio doesn't change with Project aspect ratio

I'm doing multi cam editing of a concert. I use Ken Burn effect on most clips, to make a subtle movement for the otherwise static cameras. I'm using timelines that are either 3840x2160 or 2160x2160 to keep the pixel quality.

Now, I need to deliver two versions - one in 16:9 for Youtube and one 1:1 for SoMe.

I make my edits in one project timeline (fx 1:1) and then I duplicate the project into a new one and changes the aspect ratio to the other type (16:9). The only problem is - the Ken Burns aspect ratio stays in the old aspect ratio (1:1)! It sticks to be 1:1 in a 16:9 timeline or vise versa.

I have tried duplicating in different ways - duplicate a project, duplicate the clips into a new project, using smart conform. None of this makes the Ken Burns aspect ratio to mirror the new project size.

For now my only work around is to put a new multi cam clip on the timeline and making all the edits all over again. Which is double the work.

Any help on this?

Thanks! :-)