Plugins not auto-loading in Admin (Upgrade from 1.39h)

I'm upgrading from 1.39h to 1.51. I've dumped my 1.39h database and put it into a new databse for the 1.51 upgrade. I ran zc_install and upgraded the database.

Everything seems working except that when I add plugins, the admin auto-loading doesn't seem to be working.

For example, I have Testimonials Manager installed in 1.39h and I tried to install the new Testimonials Manager in 1.51 but I don't see any of the Testimonial Manager menus in the Admin of my 1.51.

I see the Testimonials sidebox on my store (1.51) and I can view all the "old" testimonials, but no Testimonials Manager menu in the Admin.

Any ideas what I did wrong, or missed out? What's stopping the auto-load to run?

This goes the same for CEON URI Mapping as well.

OK, nevermind. I figured it out. The new plugins actually delete off files after running for the first time.

For the Testimonials Manager, it was the admin/includes/auto_loaders/config.tm.php file.

For the CEON URI, it's the admin/includes/functions/extra_functions/ceon_uri_mapping_admin_page_reg.php file.

Just need to copy these files over if you ever "reinstall" ZenCart.