This article explains the BACKTRACK problem that causes custom fields to disappear when certain security features are enabled. This appears to be a bug and the Solution section below explains how to avoid it until the bug is fixed.
System uses ID/Password security
Added fields disappear from ITEM Update screen ONLY after these options are checked:
Require User ID/Password to be entered when program is started
Require User ID/Password for Maintenance
Fields reappear if security options are unchecked
This problem only occurs when both boxes are checked. If only one (does not matter which one) is checked, then everything behave as its should.
We believe this is a bug within BACKTRACK.
Until the bug is fixed, one or the other security options must be checked but not both.