Update does not work as expected - need help

[pgpgp]

I am a new user. I love the tool. A big thank you to all the people who made it available. Having said that I find the description/instructions a bit difficult to follow at some places even though I can see that a lot of effort has been made to keep it simple and clear. I say this because, likely, I am setting something wrong in the configuration but I have no idea what it could be.

I have a NAS device, let me call it NAS_source, and want to use FFS to create backups of that NAS shares/folders. I have two (2) backup destinations, one is a USB drive and the other one is another NAS device, let me call it NAS_destination. I created a ffs_gui file for each of the 2 backup destinations. Both jobs are similar, except for the destinations used. They are both "Update" jobs. I do not think I have changed any defaults for the "Update" jobs except for the "Delete files" folder. The data in the source NAS is a single folder with a number of subfolders with more files/subfolders below.

I run both jobs and the files were synced to their respective destinations. All good so far. Then I added some new files to one subfolder of the source NAS and wanted to back them up to the two destinations. Rerunning the USB destination job worked as expected and the new files were added to the proper subfolder in the USB destination as expected. However, the NAS_destination job rerun instead of adding the files to the correct subfolder, duplicated the entire source folder as an extra subfolder in the destination. This doubled the number of the files in the destination and... confused the hack out of me. I did not expect this. I expected the same behavior as with the USB job. I then deleted the new subfolder that got created in the destination NAS and did the compare and synchronize again and the problem repeated itself and copied again the entire source folder into the destination as one of the subfolders; meaning the problem (or what looks to me like a problem) is reproducible.

The source and destination paths are the same in both of the jobs. The only difference is that for the USB job I use the alias instead of the drive letter. So what looks like two nearly identical jobs gives two very different results.

Please help me with this. This seems pretty basic... What could I be doing incorrectly? Thank you.

[pgpgp]

I think I know what I did. While trying to figure out what I wanted to back up and how I must have created two similar but different Update jobs and first I must have used the first job and then the second one. Likely the difference between the jobs was an extra folder in the first one which was not in the second one.
Hence the nesting of the folders. Sorry for the trouble.