Odd Issue with Merging Spline Actors that have Instanced static meshes

I’m making a maze with 4 different colored vines differentiating the four areas. in order to make adding the vines less of a headache, I used a spline tool that created instanced static meshes. I have a little under 100 vines per quadrent, except when I try to merge actors, It seems to move a good 2/3 of the meshes based on the rotation, rotating by some arbitrary and distant rotation point. One third goes one way, the other third goes the other way. I’m desperate for any kind of advice on how to resolve this.

Attempting to convert to static mesh places them in the right spot, but doesn’t keep anything beyond the first instance.