Splitting lightroom catalogues - Question

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OK. Quite simple in the end. Had a collection that was set up to filter all photos from 2010 and prior and these were the ones I wanted to export. Process was:

1. Select the collection and export as catalog (did not select "export negative files" as I wanted the originals to remain within the existing file structure)
2. After export, selected all photos within the collection and selected "remove from catalog" - NOT delete
3. Sit back and think "that was easy"

For me I just wanted to cull the size of my LR Catalog. So by using the above method, all original files remained in their original location but are now spread over 2 catalogs. May not work for everyone depending on what file structure you use, but worked for me.

Edit: should add that old folders that were now showing as empty, I removed from the catalog (again not deleted as they contained files in the newly created catalog) and all other folders now only show the newest files.