Pebblehost 1.21.4 purpur, how to update advancement based datapacks?

I checked r/minecraftcommands because I thought i did something wrong updating the pack as last time we updated the server the Advancements reset from the datapack, came to the conclusion it was because of having to enable the new datapack when the server was on, now we are trying to prepare for the 1.21.5 update and want to avoid the same mistake, was mentioned to check the server propertys folder to enable it while the server is off to avoid resetting, but there isn't any datapack related settings there, if anyone can help I would appreciate it