use adaminstall and install from dsdbutil backup file

I am using adaminstall.exe  with advanced switch

'adaminstall.exe /adv' to install a adlds replica from a backup.

the backup is a dsdbutil backup ( ifw create new backupfile )

I want to verify that the dit file created by this backup is the correct

one too use for a dit file ( on panel for dit and recovery files )

and that I do not have ( or need ) a recovery log file.

I need to veirfy that I do not need to process the backup file before

setting up the replica with the backup file.

I have to ask because the original dit files ( in adlds instance ) and

the backup dit file are totally different.  original dit file is 4MB and backup

dit file is 18MB

Note, this does seem to work, but I want to make sure that this process is ok.

thank you in advance.