I was referring to the fact that you hard-coded a change to a core file, causing your site to ignore the data that's in the database when producing metatags. You did this because you don't want to update all your products.
This means that now you have data settings in your database that says "do it this way", but you are using altered code that ignores the settings in your database.
Thus, unless you make yourself some good notes, you're going to have to be sure to re-customize your code anytime you attempt an update.
However, if you were to simply update the data in your database, you wouldn't have to deal with the custom code, because the data and the core code would be consistent with each other.




