This blogpost describes the problems that could have come up when upgrading sandbox solutions to fulltrust solutions and how i Tested it. Read the conclusion in the end for the pitfalls that have to be taken care of.
At the insurance company that I work, Achmea, one the responsibilities that I have include the SP2010 guidelines. One of those guidelines is:
- use Sandbox solutions.
of course this is a guideline, which has some “unless” clauses, because the possibilities for custom solutions would be very smart then.