Nico Seiga source changed to Pixiv

Just noticed that some pictures I'm sure I uploaded from Nico Seiga. But after a while and revisiting them, the source all changed into Pixiv.

Is this a new feature for Danbooru ?

Seika said:

Is this a new feature for Danbooru ?

I'm a fairly old feature, actually.

RaisingK said:

I'm a fairly old feature, actually.

Thanks.
Just wondering because there used to be more source link pointing to Nico Nico :)

Case closed then
m(-_-)m

It's not something Danbooru does automatically.