5 CFR § 894.303
What happens to my enrollment if I transfer to an excluded position?
November 4, 2020
(a) If you have FEDVIP coverage and you transfer to a position excluded under §894.302(a) through (d), your enrollment stops.
(b) If you have FEDVIP coverage and you transfer to a position excluded under §894.302(e) through (j) with no break in service of more than 3 days, your enrollment is not affected. If you have a break in service of more than 3 days, your enrollment stops.
(c) If you did not elect to enroll in FEDVIP and then transfer to an excluded position, you lose all rights to enroll at that time.