Annoying Thing About List Of Products!?

I have approx 700 products on my website.

I need to make a change to all the products. Something quite quick and easy but that cannot be done via an import/export.

I set the list to display 100 products per page giving me 7 pages.

You would think I would work through the first page of 100 products and not seen them again in the 6 pages. Well, thats not the case and products from page 1 are popping up on page 2,3 etc.

Its very annoying. I'm not refreshing the list or anything, all my products are being opened and edited in new tab. Grrrrr

Use the items_per_page parameter similar to the manage orders page: