Currently we can only copy one relative style at a time.
Some blocks or classes may have many relative styles and when moving relative styles to another block or global class, transferring these relative styles is currently unnecessarily time-consuming and repetitive.
It will be great to be able to copy all relative styles in a single click and then when pasting in the target, to paste them all in one go.
The most flexible approach would be to be able to select and copy multiple relative styles, but we can certainly live with just doing them all if it means getting the feature released more quickly.
Even if not all relative styles are required in the target, it is much faster to delete any unwanted relative styles than the current way of copying them individually.