Patch 1.44, English version.
I'm in Act 2. I have level 3 access to battlefields in Act 2. However, when I go to the battlefields, the "leave battlefields" icon indicates that I only have level 1 access. Sure enough, all dungeons but the first are locked. <img src="/ubbthreads/images/graemlins/disagree.gif" alt="" />
When I return from the battlefields, my "enter battlefields" icon again indicates that I have level 3 access.