One of the most interesting features in Gold and Silver is the Time Capsule. After opening, it allowed players the opportunity to trade over their beloved fighters from Generation I games, or trade their new ones to these games with moves they previously couldn't have. There are two very obvious technical limitations to this, of course, which are detailed below.
How to Open
- no Johto Pokemon or eggs can be transferred. - no new moves on old Pokemon can be traded over.
This means that you can't trade over your Lugia to awe Kanto with, nor any of the other Johto Pokemon. Not even pre-evolutions and evolutions of Kanto Pokemon. There are, of course, glitches that circumnavigate these restrictions, but we won't get into that here. The time steam must be preserved.
To be able to trade over Pokemon with new moves, you must first delete them. This is done either by writing over the offending move with a TM or level-up one, or taking the Pokemon to Blackthorn City's move deleter to have it erased manually. The latter method is the only way Pokemon who have learned Whirlpool will forget it.
It is perfectly find to send back a Pokemon with a move it couldn't learn before but was available in Generation I. An example of this is Blastoise with Ice Punch, or Machoke with Karate Chop. Be warned however, moves like Karate Chop that changed types in Generation II will not retain these changes in Generation I.
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