Productivity modules added by 248k use category 248k_productivity_category instead of the normal productivity. This leads to issues when mods have categories whitelists on their machines, or blanked-apply category whitelist to all machines. Is there a specific reason for 248k modules to have a custom category? It doesn't seem to be called out anywhere else in the source

It was like that even before I updated the mod for Factorio 2.0. Since it looks like an easy fix, I think I'll go ahead and adjust the category

I think that was due to the 248k modules supposed to be used in the 248k machines exclusively and many of those did not use regular prod mods.

Also, it would have likely been like this due to the giga modules being allowed in any machine that took prod mods regardless of the recipe. This allowed you to get productivity bonuses on final products.

Both concerns seem to no longer apply, no? 248k machines take normal prod mods as usual in 2.0

First, I’m going to check the state of the mod regarding the custom productivity modules. If changing the category affects how they work, I won't make any changes
however, if nothing is affected, I will definitely change the modules' category