But on top of that I had to add code to deal with this migration and to move it from one context to another (on jscript side), while unlinking all the props, which basically reset the jsdisp while keeping its memory address. I think I'll have to do something similar now.
That sounds ugly, I hope we can avoid that. If it's just about the comparison, there are things like `IObjectIdentity`, I'm not sure without a closer look.