Hi, D S.
1. No, it allows it to be used in SCIM flows
2. You need to declare all attributes you want be available in OIDC flows as such.
3. Not sure what your issue is, you'll need to diagnose a bit yourself, checking what appears in logs and whether your settings conform to official OIDC specs. If you'll find out that Gluu violates those specs, please provide us logs and captures that back up this suspicion, so we could analyze/reproduce them. Please check [this article](https://www.gluu.org/docs/gluu-defaults/logs/) for some clues on how to prepare it.
4. I'll check and get back to you with an answer to this
5. Can't answer this without knowing what those edit were. If you just changed some properties of attribute, you don't need to re-add it. If you removed it and created a new one with the same name - you need to re-add itt