After restoring the database from a previous database backup, the external storage mapping information is missing.
In PAM versions previous to 3.3.0 this was not occurring and the mapping data was correctly restored.
This is a known problem in the mentioned versions.
Product: Layer 7 Privileged Access Manager
Version: From 3.3.0 to 3.3.2.
The fix for this problem is included in PAM version 3.3.3, PAM version 3.4.1 and PAM version 3.5