Unable to see files in iTunes File Sharing

I'm using the latest version of iTunes, and have both an iPad and iPad2, both fully upto date with the latest version of IOS. Everything I now write about applies to both iPads.

Basically, I'm unable to see files that are sent to iTunes from the iPad. The ipad is connected to the PC, I select the file I want to send from the appropriate app, and then "send to iTunes". The file never appears under the app that sent if from the file sharing section of the device in iTunes. Even forcing another sync doesn't help either.

Here's the strange thing, if I unplug the iPad, then reconnect it, go back to file sharing page in iTunes, and click on the appropriate app, the files show. However, if I click onto another app in the file sharing list and back to the original one, the files have disappeared.

By way of example:

I connect my iPad to iTunes, after it automatically syncs, I select the iPad, choose the apps menu and scroll down to the file sharing window.

On my iPad, I open Pages, select a document and send it to iTunes.

Back on my PC, the file doesn't show under the Pages app in the file sharing window.

I resync the iPad, still no change.

I disconnect the iPad, reconnect and let it automatically sync again.

I navigate back to the file sharing section and click on the Pages app. Low and behold, the file is now showing.

I click onto any other app that is listed in the file sharing section, then click back to the Pages app. The file no longer shows.

It will remain like that until I unplug the ipad, and connect/sync again.

Exactly the same thing will happen regardless of which app I choose that supports file sending to iTunes.

Finally, just to confuse matters further, the reverse is also true. Adding a file to the file sharing section doesn't appear in the list, and the iPad can't see it - until I unplug and reconnect again. After that, same issues happen as already described.

Any assistance would be appreciated.