I have a problem with syncing my calander with outlook 2007 for iPhone 5s, ipad 1st and 3rd generation. Contacts work find, and new and changed enteries in outlook all go to the devices. Device Cal changes do not appear in Outlook

Question

Over the past year or so, I have been unable to fully sync my iPads with outlook 2007 calander. Now I have an iPhone 5s, and really need the calander fixed. Contacts seem to sync in both directions, and any new or changed cal enteries in outlook appear on the device. The problem is that any new or changed calander enteries do not make ip back to outlook 2007, so there is only one-way syncing (down to the device) but no return, for calander entries.
I am now using the latest itunes, which I followed the recommendation delete all apple stuff, and then reinstall, I have used scanpst, built new PSts, etc, am I am stuck.
Not using icloud either.
Not using wi-fi, purely USB cabale sync
Running on Windows XP, SP3
Now IOS 7.0.2 on iPhone and 1 iPad (3rd gen)

Answer 1

Kept searching, found this: https://discussions.apple.com/message/23321067#23321067
Bottom line: if you follow the recommendation to delte all itunes software and re-install, it don't work (at least for me and many others).
However, purge the data (certain data) and the data syncs.
I think the folder is Apple Computer\Preferences and it needs to be purged.
To be sure, maybe someone can rename the folder on their system, then run itunes and see if it syncs ok.
The idea is to figure out the least minimum stuff that needs to be touched in order to get a working solution than having to purge all Apple software and then rebuild it all over again.
I had purged other files out of inpatience, but did not want to purge entire folders because I had Safari, and Quicktime software, and did not want to wipe that out, Plus there were software downloads and device backups in some of those folders. But I really believe it is the preferences folder, and I would like someone with the same problem to try it and verify it.
Once the preferences folder is removed/renamed (taken out of the picture) pluggin in the device and go to the INFO (I think that is the iTunes tab) page where you select calanders, contacts, email accounts, etc. They will all be unchecked (because you wiped out the preferences) and you need to reselect them. Then run your sync.
What I had done in testing was create something on the device, and modify something else on the device looking to see what got up to Outlook. I got the good news that something good was happening when I got the conflict message from iTunes, and it showed both Outlook and iPhone, showing the calander entry I changed on the iPhone. Never got that before. After the sync, everything looked good the few test entries were uploaded to outlook.
Now, My Cal is 10L+ enteries, and I am doing 100% sync (I don't select the option to ignore enteries over x days). I also have 1400+ contacts. Before this change, the sync of contacts & calanders took a couple of hours (and only operated ONE-WAY, now the syn is taking less than 5 minutes for this one step.
I am a Windows XP Professional user, x32 bit system, using Outlook 2007, iTunes 11.1.1.11, I am standalone (no exchange server) and have about 10 email accounts (mainly POP) defined. I am using only one calander in outlook, but I have Outlook and 2 gmail calanders in the iPhone.
I am running iPhone 5s and iPad 3rd Gen both with IOS 7.0.2 and a 1st generation iPad with the latest version of IOS 5.x.
If anyone else has success, I'd like to hear, along with your experience.