Specifiy Order of MeshInstances

Is there a way to control the order of mesh instances when importing a new mesh? I’ve got a model that I’m currently working on, and if I add any new objects to the FBX the order of mesh instances will change. The new order seems to be random. For instance, the front door (previously [14]) is now [0].

I wrote my scripts to refer to the individual pieces by index number, but each time I add new pieces to the model, I have to go in and change everything. Just wondering if there’s a way to control their order, whether it’s done in PlayCanvas, or possibly the program I’m using to create the FBX files.