OK, so our entire site is based on flutter custom fields and custom panels. We've made it to WP 3.0.5 patching lines 443-454 in Flutter’s RCCWP_Menu.php file as suggested in several different posts.
So... now my question is... Will flutter continue to work if we upgrade to 3.1 or are we stuck at 3.0.5 until we replace Flutter's functionality with WP-Custom-Posts or Magic Fields or Easy Post Types or...
Our site was built by a developer and it would cost more than we can budget to convert the site, so we're hoping the answer is "yes", or at least "yes, but..."
Any guidance would be helpful. We can set up a test domain to try it but don't want to waste our time if "we can't get there from here".