Thank you for the answer! That’s unfortunate, but it’s good to know which direction I need to investigate next.
I already started investigating editor function blueprints along with Geometry Script for this purpose and got basic pipeline doing geometry changes working. A related quick question: is the merging performed by the editor in Dataprep or supported via the Merge Actor menu option available through editor blueprints?
If existing merge functionality is not exposed anywhere, I’ll try to implement merging via Geometry Script (request a dynamic mesh for combined mesh, find every static mesh child of tagged actor, copy transformed contents of each child to combined mesh, try to remap materials etc.). This seems doable, but I hope I’m not reinventing a wheel that is already available as an existing node somewhere 