Lewis Parker put the O's ahead on two minutes with his first goal in Oldland colours and Ryan Ashwood made it 2-0 on fourteen minutes with his second goal inside four days.
Downton fought back well and it was against the run of play when the third Oldland goal went in courtesy of Connor Davies. Tom Morgan saw his penalty saved late on by Downton keeper Charlie Aldridge but the O's were safely through to a home clash with Lymington Sports next month.