Can I re-attribute samples to an uploaded remix?

My remix of Up Until Now contains samples from Lavoura Eletro. They have since re-uploaded a newer version of that track and therefore was erased from my atrribution list.

I will re-upload my mix if that is the easiest way but I thought I’d ask first to see if there is a new way of doing this. : )

Thanks in advance Victor.: )

1) go to the song’s page
2) click on ‘Edit’
3) click on ‘Manage Remixes’

tada
VS

Now that’s service. Problem solved. : )