The rationale in Matter of Stockwell, 20 I&N Dec. 309 (BIA 1991) is to the effect that a conditional lawful permanent resident whose status has been terminated can reapply to adjust status under INA 245(a) if they have another basis to do so.
Previous USCIS position was that the Service could not entertain such reapplication until an Immigration Judge confirms such termination. In Nov 2019, the Service changed its policy manual regarding this narrow issue to accept and adjudicate a new application for adjustment following termination of CLPR status.
USCIS Policy Alert can be found here; https://www.uscis.gov/sites/default/files/policymanual/updates/20191121-CPRs-Stockwell.pdf
