Custom Filed missing from the screen after upgrading form 7.13.8 to 8.5.4


I am trying to upgrade jira server version from 7.13.8 to 8.5.4. We had successful upgrade but we seeing issue with custom fields. We are seeing the fileds are avaiable in database but i am not seeing in JIRA admin UI / screen. Did any one faced this issue. If yes, please advise us with fix

Lakshmi K Ponnapalli