I've been sending old mons through trough Transporter to Bank. Recently a select few have been blocked by the Transporter namely
Farfetch'd from XD and Fire Red in game trade
All Pokemon box egg reward mons
JPN colosseum celebi and pikachu
All were obtained myself via emulator and moved to pokemon Black through Pkhex. I can't identify an issue with them myself using pkhex.
Could anyone assist?
Got them through after going through Poke Transfer gen 4 -5
Confirmed to be an issue with the apostrophe - It appears going through Pal Park or Poke Transfer in Gen 3 - 4 -5 will alter the apostrophe which is what the Transporter is checking for.
As I originally used Pkhex to move them from Gen 3 to 5 the change hadn't occurred and they were blocked from going into Bank via Transporter.
A note is that Pkhex will flag them as illegal even though they are fine - Flags that the nickn