It appears that it's not just manuscripts that leave out avagraha but also modern printed editions.
As Piotr Balcerowicz pointed out, Mahabarata critical edition 3,3,24 does use avagraha, but if you look at Bhagavad-gItA verse 10-41 in the Mahabharata critical edition which is Mahabharata 6,32,41 (page attached ) you will see that Belvakar did not use avagraha. And in Belvalkar's printed edition of the Bhagavad-gItA for that verse he did not put in avagraha. On the other hand, Sw. Gambhirananda in his edition (page also attached) did use avagraha.