Backup question

Hi all,
new to this forum, I’m also relatively new to asterisk/freepbx
A question about backup :
when I drag a Template and drop into Backup Items area, it displays an amount of items to be backuped i.e. a full backup displays seven row of items

When I go to save but not run, I noted the items list is smaller, in my case three or four rows (now I don’t remember which ones) disappear.
Is this correct ? Does FreePBX decide what is really needed to be “backuped” ? or is it only a displaying issue ??

FYI FreePBX 5.211.65-5 distro


no one has (or noted) this behaviour ??