Quote Originally Posted by jrhartman View Post
That file stated that it is a full version, and it scared me! Will it write over all my customizations?
It might, if you have edited any of the original files.
That's why WinMerge is a very handy tool when doing upgrades.
Documentation on doing full upgrades can be found here: https://www.zen-cart.com/tutorials/i...hp?article=108

Quote Originally Posted by jrhartman View Post
Should I delete the security files that I added this AM?
No. But if you replaced any files as a result of upgrading from 1.3.8 to v1.3.8a, and any of those replaced files matched the filenames of the ones included in the patch, then you'll need to re-apply the patch to those files.