Problems with iTunes 7.1.2 : Missing Contacts Info

Question

Problems with iTunes 7.1.2 : Missing Contacts Info !
I synced my iPhone 5s (running v 7.1.1) to my late 2010 MacBook Pro 13" (OSX 10.9.4) using iTunes (can't remember exactly which version of iTunes, but whatever was the latest around the end of May 2014).
Subsequently, I upgraded my iPhone 5s to v 7.1.2 and also upgraded iTunes to 11.3.1 (2), then synced my 5s to my MacBook Pro.
Following this, on both my iPhone and on my Mac (I don't use iCloud), many of my Contact details had reverted to a much older version, and most of the information under the "notes" field in each contact was missing.
Is there a way to revert to the prior version of iTunes (7.1.1) or otherwise restore this missing information?  There is critical information in my Contacts that has now ceased to exist!

Answer 1

Often in upgrading the OS, QT or FCP for some odd reason QT will get knocked slightly off kilter. Before doing the step back to 6.5.2, try a complete QT reinstall.
This is how:
Go to /library/receipts and delete any files that say Quicktime followed by a number e.g. Quicktime703.pkg
Go to the Apple quicktime site and download the appropriate version of Quicktime to your hard drive.
Run the Quicktime installer.
Repair Disk Permissions for your System Disk (Disk Utility > Select the system disk > Repair Disk Permissions)
Reboot
FWIW, FCP4.5 can run without issue under 10.4.x and QT7, but it is VERY stable under 10.3.9 and QT6.5.2.
Good luck.
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