I would like to upgrade from 1Password6 on Mac to 1Password 7, but the change from AgileKeychain to OPVault concerns me. I have several devices Macs running different versions of OS X/MacOS and different versions of 1Password. Same for my iOS devices; some are running different versions of iOS and different versions of 1Password. On some of those devices the OS is the "latest," but still outdated. In short I am learly of changing from AgileKeychain to OPVault because I am afraid I'll effectively lose access to 1Password on those older devices. I read that the OPVault format was introduced a long time ago and some versions and platforms of 1Password have supported the OPVault format for differing amounts of time.
What I would like to know is which versions/platforms of 1Password support the OPVault format? Please be specific. (I imagine the answer is a simple matrix)
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided