Hi @UnknownDef
You can find below Sangoma Wiki for Backup&Restore. Pls read that and apply some test at your PBX.
https://sangomakb.atlassian.net/wiki/spaces/PG/pages/20807752/Backup+and+Restore+FreePBX+15
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Correct update FreePBX 13.0.194.10 to FreePBX 16
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