Mapping URLS - Zen Cart to Open Cart

[SCW]

Hey there fellow Mozers!

I have an interesting situation at hand.... I am migrating a Zen Cart site to Open Cart. There are approximately 2,000 urls that need to be mapped over.

ZenCart urls currently appear similar to:

catalog/category-1/subcategory-3/product.htm

Where OpenCart urls appear similar to:

index.php?route=product/product&product_id=1234&search=product

Can anyone suggest an htaccess approach or any other ideas to pull this off without too many major SERP blips?

Thanks!!!

[AdamThompson]

I would switch the OpenCart URLs to something more static/search friendly first.