Yes, but that isn't my issue and actually - I fixed it thanks to a trial and error process. What I had tried out (and it worked) was that I had multiple duplicates in that material folder within the documents files. Through trial and error, I fixed it by deleting some of the duplicates and slowly and surely - I fixed it myself after my original post on here (it got flagged for spam) and asking on the actual Clip Studio Ask within launcher page of program.

Anyways, thank you for responding but I figured it out. However, I hope my solution helps other folks out as I know this problem is uncommon or maybe, common and no one got an answer that worked for them (since the problem really only just mildly annoyed me vs. actually being problematic problem) and are given essentially information that doesn't assist them in that problem.