save query no longer gives the path to the file, which breaks scripts. The description of save query in how_to.html did not change to specify this, and it doesn't seem like a good behavior anyways. What if another file with the same name exists in another dir? Likely not, but it's bad on principle. Please fix this and issue a bug fix update specifically for BDS. Also, fix your affected versions.
Ex: $world/db/014698.ldb is now $world/014698.ldb
Script: MCBEbackup.sh Commit d2ff4b032310d8f9958c07890ca6081c1ceb368a works around this