SQL Incremental backups not showing below Full backups while restore

Hi,

 I have witnessed this of for the first time. I am trying to restore one SQL DB using Netbackup SQL Client. While browsing for the available backup is Restore SQL server object, I am uaable to see Incremental backups below their predessor Full backups as it should be. I am seeing only Full backup Images. Instead , I can see one more source server  with similar name and under that I can see "DATABASE IMAGE PLACEHOLDER" and all incremental images are under it.

I checked on other SQL servers and do not see any thing like this on them. Any idea what is this DIP  and how to resolve this strange thing