Thanks for the analysis:
We discussed the loss of that line by the Northern schools some time ago.
Here’s a quote from Sylvester:
Sylvester’s argument was as follows:
http://www.dhammawheel.com/viewtopic.php?f=25&t=26456#p380455… the loss of the "The All exists"and “The All does not exist” passages proved particularly acute for the Northern Buddhists, as their sutra became dislocated from the pre-Buddhist context. It does not help that SN 12.47 and SN 12.48 do not seem to have survived in the Agamas either. Even if echoes of the Upanisadic “sarvaṃ asti” survived in the memory of the Northern schools, it did not help that the Sarvastivadins adopted a similar-sounding but unrelated motif, which gave rise to so much spilled ink over the issue of svabhāva that detains Ven Nanananda today.