This does not seem to work with LWSN or F10. Locally I can do F9s and my helicopter rotor blades have motion blur. Yet under LWSN or F10, it's ignored. It DOES seem to render the 20 passes I have selected for MultiPass motion blur, but either isn't rendering the blur, or is failing to re-combine the passes in to one frame before saving.
For my needs I didn't seem to need to enable the "reload for each pass." Might this be the reason? Does LWSN/F10 require that? I've attached a simple version of the content.
UPDATE...
So I went ahead and turned on "reload for each pass" and submitted it to LWSN and F10. Same negative result.
UPDATE TWO...
So it seems Octane's render passes saver is the BUG. If I use LWs native output saver, I get happy motion blurred frames. CONFIRMED.