Parts of the old website were captured by the Internet Archives.
There was a two page mission list and it looks like the first page (listing missions through number 191 February 7, 1945 was captured.
https://web.archive.org/web/20010303.../missions.html
On 26 April 1945 the Group flew its final combat mission (Number 249) to a motor transport depot in Tarvisio, Italy.