The Fourth Circuit has determined that the procedural requirements of Matter of K- which relate to admissions to the elements of certain types of crimes - is inapplicable in the relief from removal context. Thus, the agency was not required to comply with K- before finding that an individual who admitted to using and selling drugs lacked good moral character and was ineligible for cancellation of removal. The Court also noted that the concerns of K- did not apply when the non-citizen was represented by counsel and providing the admission under oath.
The full text of Diaz v. Blanche can be found here: https://www.ca4.uscourts.gov/opinions/241062.P.pdf