When you upload a texture (for instance) the upload goes to the open inventory, changing the focus. You probably wanted the texture as part of a build, or outfit, but now that folder is scrolled off, and the "new" texture is the focus.
Would be much more efficient, if the upload went to a predictable hopefully "static" location, and could then be moved to where you need it, without having to search back to where you were before the up load.