Reply to TSP Collection duplicated after starting S4

I recently installed Traktor S4 and didnt use the import function on first run. I did the following:

• Renamed my TSP Traktor root folder to Traktor.tsp, let S4 create a new Traktor root folder in the same dir
• Renamed the new Traktor folder to Traktor.s4 and my Traktor.tsp folder back to Traktor
• Copied the Samples dir from Traktor.s4 to the Traktor folder
• Started S4

All was fine, all my tracks were there with the grids and cues as Id defined in TSP, thought that the job was a gud un.

On restarting S4 (I have the import music folders at startup option set) it has imported all the tracks again, and duplicated my collection

I have tried copying and renaming the most recent collection.nml file from the Backup folder into the Traktor root dir to no avail. I also now have a Traktor\Backup\Collection dir and I have tried loading the last backup file from the time when the collection wasnt duplicated also to no avail.

I know I should have used the import function, but I have read a few posts of ppl wanting to revert back to TSP as there is some functionality that isnt in S4 so I didnt want to burn my bridges.

Anyone any ideas on how I can get back to where I was, and also if its possible to have the collection so that I can leave both versions installed for the time being until I make my mind up which I want to go ahead with?

TIA,
Jon-G