I've been using an older version of 1Password on my iPhone 4 (iOS 7.0.4) but decided recently to upgrade to 1Password 4.
I also run 1 Password 4 on my iMac (running OS X 10.8.5).
My iPhone and my iMac versions of 1Password had not been synced in the past, but they did carry some duplicate information.
I've now synced the new 1Password 4 on my iPhone to 1Password 4 on my iMac using Dropbox.
This seems to be operating perfectly.
I am now seeking instructions on how to import the backup file data made from my phone's older version of 1Password.
The backup file is on the iMac (in the form of a '1Password0100-xxxxxxxx.1ptbackup' file).
Some of this old and un-synced information is of a critical nature, is needed and cannot be lost.
Other information is a duplication of the newly synced data.
FYI the importation of the old 1Password data to the new 1Password phone app failed when following the prompts on the initial 1Password 4 start-up.
Also, my older 1Password phone app now opens only to a black screen.
Thanks in anticipation of your response.