Hey there, bro. I just want to say that have the same issue in 4.15. My Item_BP have a struct of all base variables like description, icon, amount, cost, stack_bool and a lot of others. I use this workaround with construction script, but even with that create all those variables and set them for all Item_Child is very time cost.
Maybe you or anyone from community founded another workaround? Because it happened from 4.11 at least and I’m not counting that this will be fixed soon.