My 2013 SDV6 with ZF8HP has started to intermittently 'shunt' when coming to a stop. Its only at speeds of below 10mph and doesn't do it all the time. It feels like its grabbing 1st gear and engine breaking.

I've recently had a mega flush and gearbox reset (as a maintenance measure, nothing wrong with it) and its happened since then.

Did the reset delete a possible patch talked about here https://www.rrsport.co.uk/forum/topic9668.html or am i barking up the wrong tree totally?

Anyone else had similar? The warranty runs out at the end of August so i'm really keen to identify any problem as soon as possible.

Cheers guys. L494 3.0L SDV6 Autobiography in Chile Red (Current)
L320 3.0L SDV6 Autobiography in Baltic Blue (RIP 29/03/2021 insurance total loss)