Make sure to go to the OT/Misc Tab on each pokemon you want and UPDATE THEM TO YOUR DETAILS
Update the SID/TID and OT to your details
Also these files are basic files:
-Change what you want
 - Held Items
 - Nature
 - Ability
 - Stat blocks
 - Attacks
Just make sure to press the reroll button next to the PID on the main tab and then save the pkm to your box slot