Since I’ve been working on SharePoint Online, and thus Sandboxed Solutions, I noticed a lack in the development tools. Where the CKS extensions for Visual Studio offer the option to choose “Upgrade” as a development method, this doesn’t work on sandboxed solutions. The upgrade process for sandboxed solutions is different; you need to upload your new solution with a different filename, upgrade and then delete the old solution.
So. Wouldn’t it be nice when Visual Studio could do this for you, so you can also use Upgrade as a deployment method for sandboxed solutions? Right, thought so too. So please vote on my suggestion, so the CKS guys can pick this up: http://cksdev.codeplex.com/workitem/7713. Thank you!