Luc,
Squadron Code "LG" points to 322nd BS/91st BG.
However, no mission recorded for that BS on 5 April 1945...See
http://www.91stbombgroup.com/Dailies/322nd1945.html
Latest LG-V was 44-8852 according Dave Osborne's Fortlog. A #852 appears in some missions after 5 April, so a/c could perhaps take off again?
Please note there was a 15 April 1945 mission to Rochefort, France (Gironde River), but here no losses either.
Groet, Leendert