There is a way to restore old backup files. If you have a backup copy from an old install. Take the old backup that used to be located in the downloads backup and put it in cloud storage somewhere where the new phone has access too it. Download and install an old version of BLB (Found one here:
https://blb.en.uptodown.com/android/download/3884170). If links are not allowed just search for blue letter bible old apk. The one I found was 1.42.44. I installed this on my new device, created the /downloads/BLB_Backups, Put my old backup file in that folder and launched the old blb app. I was able to import the file just fine on the latest android and then went to the play store and updated the app. All is good. Hope this helps.