I guess you don't want your custom objects to be patched online.
If so, you can continue as before.. Apply your custom patch to test, fix the problems and apply it to prod.
If you won't use EBS for your custom objects, then you have nothing to do with those custom editioning views.
There is no best practice in the context of downtime custom object patching in EBS 12.2.
see this community disccussion on MOS as well -> Customizations for 12.2 that do NOT require online patching/
https://support.oracle.com/epmos/faces/CommunityDisplay?resultUrl=https%3A%2F%2Fcommunity.oracle.com%2Fthread%2F3653910I hope the link above will not be changed over time :)