When connecting to an exchange account for the first time, it sets up all default folders. This is done using the language of the connecting client, which may result in an unexpected layout. This happened to me, leaving me with english instead of german folders.

This would not have been such a problem, but I wanted to import my structure from a previous account. No problem importing things, but they went into new folders with the german names. Now I had two contact folders, two mailboxes, two calenders, everything was there twice, and the empty ones were the defaults...

At first, I was told, the account would have to be reset completely, wiping out all data already imported. But, actually there is a much simpler way of changing the folder names to the desired language. Simple start the Outlook of your desired langauge from the command line specifying the following parameter:

outlook.exe /resetfoldernames

Presto, everything is in your language. Now importing is a lot more fun because you can actually use the imported data.

Today, I got a new Exchange account to replace my existing one. After copying everything, I only had to get my Xda neo to sync with the new account. This did not prove to be that easy, as simply changing the configured account led to interesting errors. Not only would ActiveSync always give me an error, it also produced errors in my PIM's contact list. It would show all contacts for a split second, then only show about half of the contacts. I tried to remove them all, but was only able to remove those shown. The others remained and broke the synchronization process.

So, how do you solve this, you ask. I don't know, if this is the best way, but it was the only one I found and that solved my problems without having to hard-reset my device:

1. Rename the file 'pim' to anything else and restart your PIM. This will clear all contacts, calendar entries, tasks, etc. If you don't sync all these items, you should probably make a backup first!
2. Remove the mobile device from the ActiveSync connections
3. Create a new connection to the PIM and start syncing with the new settings

I realize, this is not very comfortable, but at least it works and leaves the rest of your device intact (i.e. installed programs, customized sounds, etc.).