Newark Air Museum’s November 2006 Dispersal newsletter contained a piece about the Auster leaving and it said:

“The space will also mean that the Monospar can be allocated immediate under cover accommodation when it returns from its off-site restoration.”

Last time I was at Newark the Auster was still on display and the Monospar had not returned.

Also in the aircraft list on the museum website the Monospar is marked up as still being off-site, so I presume that it is still at Innsworth.

http://www.newarkairmuseum.org/aircraftlist.htm