20 CFR § 701.505 - May an employer stop paying benefits awarded before February 17, 2009 if the employee would now fall within the exclusion?

No. If an individual was awarded compensation for an injury occurring before February 17, 2009, the employer must still pay all benefits awarded, including disability compensation and medical benefits, even if the employee would be excluded from coverage under the amended exclusion.

[76 FR 82129, Dec. 30, 2011]