Question is after this explanation

We have been using a rewrite script in our osCommerce based stores that will rewrite the product url from this
http://transfertown.com/product_info...roducts_id=648

to this

http://transfertown.com/dragon-lady-apron-p-648.html
This has worked very well and improved our search rankings

Now we have changed our store structure and along with it the script to accommodate it.
Now our URL rewrites look like this
Unchanged
http://transfertown.com/product_info...roducts_id=648

Changed
http://transfertown.com/dragon-lady-...-648.html?ID=8

The ?ID=8 is a store number it is dynamic for every store and needed for the Mall to operate correctly.

My question is does it matter if the ?ID= is outside of the .html ? Will this matter to the search engines?

We have submitted our site after the changes along with a Google site map, (The site map generates the rewritten urls) over 2 1/2 weeks ago but are not seeing any results. Even for the same product searches that are based in our old stores using the rewrite but without the ?ID= outside the .html

Thanks in advance for any help and comments