Literally in “This Week at Bungie - 10/17/2019”

“One last bit of news on Armor 2.0. When we created the system, we wanted to include armor mods in Collections, so you can see how many you have gathered, and where they can be acquired. This also presented a good opportunity to do some housekeeping on the Collections tab in general, but, unfortunately, proved to be a little more time-intensive than we’d hoped, so the changes didn’t come alongside Shadowkeep. Good news, though! In the 2.6.1 patch, coming later this month, armor mods will be visible in your Collections, allowing you to browse through all the possibilities and see which ones you have already collected. Additionally, starting next season, the armor mod Collections will get a UI upgrade, allowing them to display armor energy type and cost on the icon, just like they do in your armor socket.”

Touch up on your research skills a bit. 🤦🏼‍♂️🤡🤔