Thread: version 4 and 5 databases compatible?
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Old 04-30-2021, 04:23 PM   #5
ownedbycats
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Quote:
Originally Posted by georgemk View Post
Once a V4 database has been opened by V5 then only V4.23 or any V5 Calibre can read/write to it.
to be more precise, some operations from pre-4.23 versions will work, but a lot of others (notably attempting to delete books) will result in errors.
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