Xbox one to series x

Ok, a few months before the series x was set to release, I bought a new xbox one because my old one broke. I think I remember when buying it, I read a deal where I could trade it in to receive a new series x. However, I cannot find anything on Microsoft
that talks about trade-in at least for credit. Is this just a figment of my imagination, or do they still have at least some form of trade-in credit?

:)