I decided to get back into the series again and wanted to start from the beginning. However, before I go wiping saves and stuff, I wanted to transfer any rare pokemon (and ones I want to keep) to the Poke Bank. From what I understand, transferring pokemon from Gen 4/5 is a one-way trip, and I can only withdraw these pokemon in Gen 6? And will deleting my saves affect my ability to withdraw these pokemon in the future?
Also, I dabbled with creating event pokemon to use on Pearl (since I missed all of them). From what I understand, as long as the stats/abilities check out, it should theoretically get deposited with no issues, correct? As far I remember, I didn't alter them to make them overpowered, just made them to fill out my pokedex.