Gen 8 Mechanics

In version 8.1.0 of Pixelmon, an overhaul was done to Pixelmon for Gen 8 movesets, with changes to TMs and the addition of TRs. Galarian generational blanks can be obtained from shopkeepers, Tier 1 and Tier 2 pokeloot and from Common, Uncommon, Rare and Spooky bosses. Alolan generational blanks can be found as tier 4 (Ultra Space) Special drops. Older generational blanks cannot be obtained without cheats.

TMs/TRs aren't in drop pools or craftable, instead players can use TMs and TRs to create/duplicate moves. By adding this Blank item to a Pokémon as a held item, the first move used (That is a legitimate TM/TR move) will imprint onto the blank. After x amount of move uses, the disk will complete and the player can remove it for use on another Pokémon or trade it away.

      ** At the moment TMs require 100 uses to fully complete
      ** At the moment TRs require 25 uses to fully complete
      ** The number of uses needed can be configured in the external drop files.

This means old players might find themselves with a lot of old TMs, these TMs, however, will only be useable on pokemon that still have Gen 7 movesets, or that still have these TMs listed in their stat files(Server Configurations).