Bug with the end of the "Lake Trio" quest

[Ikumi]

Hello,

I just finished the entire quest. But Dawn isn't giving me the option to catch one of the trio's Pokémon. I really don't know what else to do.

Thanks

 

Spoiler

 

Edited March 26 by Ikumi

[Caennethi]

You need all non-legendary caught data for Sinnoh - not just the seen data. 

[Ikumi]

Hello,

I thought the capture restrictions had been removed? I was able to complete other Legendary quests that previously required capturing entire regions, simply by having the data seen. Are you sure about that?

Thanks for your reply

[Caennethi]

Hey,

The Evo requirements have been removed. The caught data is mandatory for some of the quests.
And yes i'm sure, as this was changed last year.

[Ikumi]

Hello,
 

Thank you for these clear and precise answers. I was convinced that the Pokémon catching requirements had also been removed. My mistake. I know what I have to do! 
 

Have a good day!