How to upgrade InfoPath forms in Forms Server from WSP

I have a SharePoint workflow built with Visual Studio that implement a custom task form via InfoPath and deployed to Forms Server. My problem is that anytime I need to tweak the form, 开发者_运维百科I cannot get the new version deployed to the server without completely uninstalling & reinstalling the entire solution. The usual upgrade solution route does not seem to work with publishing the changed form to Forms Server. This is really bad because it means I would kill any workflows in progress if I uninstall the solution.

Surely there must be a way to get the form updated with the standard upgrade solution approach, right?

Create a new uniquely named wsp solution that only contains the task form changes. This has worked for other people that have the same requirement.

Check out this link for a more detailed explaination: http://social.msdn.microsoft.com/Forums/en-US/sharepointworkflow/thread/471154ac-acb2-496b-ac83-f4efb7b6e530