I want to be able to fix a VM image by deploying it, changing it then re-capturing a new version back into my image gallery. But when I create a VM from an image, using + create VM button in the image gallery, the image Capture button is disabled? Also when I Capture an image the Start becomes disabled because the image has been generalized, so I can't update and recapture the original image either. So it seems both "efficient pathways" to editing an image are cut off. Why is that? Having to setup a brand new VM from scratch every time is quite a hassle.