When I copy and paste most controls, usually the collection is lost, say in a combobox. Is this just a Visual Studio designer bug? Is there a way to re-assign the collection back or make a copy of it without having to spend hours re-creating it just because you wanted to move it somewhere else?
I also get javascript errors when using Telerik controls, especially the tabs -- they disappear on me a lot, and I need close and open the project again to see them. It's just impossible it seems to copy and paste the whole tab control without not only screwing up your entire project, but also losing all the tabs. It doesn't seem specific to Telerik though... it's like the VS designer is totally clueless. I make a backup of my project anytime I need to move something to another user control...