Yes, both Seminar and Capstone get 3 credits for L000 in Interdisciplinary Studies.
“The L000 course number has no UF course equivalent. The credit applies to the minimum credits for the degree but does not provide credit toward general education, writing requirement, or count toward the major.”
My D received similar for AP’s where she scored a 3. It’s really worth nothing other than she can register for classed early because her credit total technically puts her in the next class. But it counts for nothing in terms of graduating.