Help making backup of a bootable Hasleo drive

[admin]

I have a bootalbe USB drive made with Hasleo. I know I can clone this to another USB drive to have an exact copy. What I need to do is back this up to a file that will allow me to create a bootable USB drive from that file. Creating a system backup of the bootable drive with the backup suite and trying to make a new bootable drive from that image file  ( as shown here https://www.easyuefi.com/wintousb/resour...image.htmldrive mad) doesn't seem to work. Using a USB  drive of the exact same size gives an error that the drive is too small when I try to make a WinToGo from that image file . Yet I can clone to that drive to the new USB with no problem. Is there a way to backup of a WinToGo drive to a file and make a new WinToGo drive from that file?

What is the size of the backup image file (System Backup 20250526151821_20250526_Full_V1_1.DBI)? Is it significantly smaller than the capacity of disk B? 

Yes, its size is typically smaller than the space used on the source drive because the data is usually compressed.