First off,Thank you for the plugin, everyone loves it.
My issue is during the wipe I have all 7 rows open in the backpack,but then 2 days before the wipe I make the backpack 1 row so the players don't carry over to much stuff, After the wipe and the new map is up I go back in and set the rows to 7 again, well players have figured out if they fill all 7 rows before I change them to 1 row, when the backpack is set to 7 again on the new wipe, all rows are full as long as they dont open the backpack before the new wipe.Not sure if theres any way to fix that but I thought I would ask, thanks

Only thing i can think of is to wait a day after the wipe before updating the backpack rows that way most of the players would have already started to use the backpack.
I rather think it would be a bit of a surprise when they discover the lack of rows  :)

It sounds like what you need is a way to automatically change player permissions or plugin configuration at wipe. Both are possible to do with plugins since plugins can detect when a wipe happens (they do this by detecting the first time a save is created). The Auto Commands plugin appears to have this capability already. You could use it to invoke the DynamicConfig plugin to update the Backpacks config with a config you predefined, or use it to run commands to revoke the 7-rows permission.

I think I misunderstood this issue when I posted previously. There was recently a really similar suggestion, so I've made a change which will be in the v3.10 release to allow limiting how many items can be persisted across wipes, so that you don't have to limit the backpack size before wipe.

https://umod.org/community/backpacks/46347-beta-v39-proposed-future-features-310

I just delete all the data stuff to wipe the backpack now, it seems to work fine, but thanks for the update and the plugin Update!