Flash backup uses git, so if you are familiar with git you can see what the changes were.   Open a web terminal and type:   cd /boot then:   git show to see what changed in the last commit.   If you type:   git log you'll see a list of commits. Grab the commit id and you can view any one of them:   git show c2d9e4112dd9449b0eb98b0cd3775655cfd8a457
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