Does the search feature query products_model?

I am upgrading from 1.3.9h in which using the search feature returns results based on a products_model search. I don't remember making any code change to achieve this. In 1.5.5, I'm not getting any results. It appears I should get results after looking at /includes/modules/pages/advanced_search_result/header_php.php

What could I be missing have 0 results? products_model is populated in the database.

Thanks

Does the search feature query products_model?
Yes. As you can see on line 310 of advanced_search_result/header_php.php:

        $where_str .= "(pd.products_name LIKE '%:keywords%'
                                         OR p.products_model
                                         LIKE '%:keywords%'

Do you have model turned off in your Admin?
Admin->Configuration->Product Listing->Display Product Model ... must be set to a non-zero number to display the model in the results. But this doesn't affect the actual search.

Thank you for confirming DrByte. I do have Admin->Configuration->Product Listing->Display Product Model = 1 . The search feature does return results based on products_name but not products_model. Maybe there is a breakdown in the template being used, but I haven't stumbled across it yet.

You're making a big jump starting at 1.3.9h. Are you using an "autoinstaller" or following https://www.zen-cart.com/entry.php?3-How-do-I-rebuild-my-site-on-the-new-version-instead-of-upgrading
So-called auto-installers are not reliable.

Thanks for the input dbltoe. I have someone that seems to contribute quite a bit on here and that I suspect you all would likely say is competent handling the upgrade therefore I don't know how they are going about it.

idc1:

Thanks for the input dbltoe. I have someone that seems to contribute quite a bit on here and that I suspect you all would likely say is competent handling the upgrade therefore I don't know how they are going about it.
I'm sure that if they're stuck they can post more details about what's actually happening in the page, if they wish some additional assistance in sorting out why it's not working on your site for some unusual reason.