It's not exactly the same since you're 'leaving' your document. In X9 you could convert to curves and use them around if you wanted to.
A simple example is when using svg icons. Sometimes you want to use color gradients from one to the other or mix different parts together to make new icons.
I'll try this 'new' way with double clicking and see how it goes (copy / paste).
One thing I noticed already is that the scale is 'off': I place an svg file on a document, double click on it, copy a part, paste it back on the main document... size is different compared with original. this shouldn't happen.