I was excited about hearing about the program above, but alas $90/year if you want to export. I haven't found a free program to export .gpx. I used the old AOPA planner a lot with the export feature with my Skyview - very convenient. AOPA's "upgrade" of their online planner was abysmal. How this "passed" is beyond me. They have slowly worked through some of the bugs (many) but it is still horrible to use - scroll/zoom and wait 10 seconds while the screen refreshes, etc. - and I believe they have been at this for almost a year now.
I called to inquire about the export feature coming back and the person I talked with had no info and, honestly, didn't seem to care to want to assist me. I emailed several times since about it and have NEVER received a reply to any email. The pessimist in me thinks they are purposefully keeping it crappy to push folks toward their app...
Will think hard when my renewal comes due...