I knew nothing of this before your post but a bit of Googling yielded a page in French:
http://paras.forumsactifs.net/t21271...uerre-mondiale You need to scroll down practially to the end but there are pictures of both it and a Ju 88 G-6, W.Nr. 621800, with FuG 220 which arrived on 2 May 1945 (it's described as "GR+LR" but the first two characters are too small to see, so I can't help suspecting it's an operational code — G9+LR?).
The caption translates as:
Junkers Ju 188 V63/1 N° 140669, fuselage code CE+XA landed at Portela de Sacavem on 6 Avril 1945, It took off from a runway near Munich and landed after 14 hours in the air thanks to an additional fuel tank in the bomb bay. This Junkers was a machine allocated for experimentation, its crew was composed of civilians, its skipper had dual German/Canadian nationality and, according to what he said, could not serve in the military. These elements were confirmed in a written note from the German embassy in Lisbon demanding the aircraft's return.