Hey there,
Working with UVs in Houdini brought up some questions that I'm not sure how to solve.

1 - how to match the scale of a single or group of UV islands to the referenced UV island's scale and keep existing layout at the same time?
2 - Is there a way to sew edges without re-arange whole layout? The only way I found was in this tutorial [www.sidefx.com] but again it's breaking existing layout

3 - How to edit and see other object's UVs at the same time without merging them?

mikhail s
2 - Is there a way to sew edges without re-arange whole layout? The only way I found was in this tutorial but again it's breaking existing layout

Okay I found an answer to this for those who might be interested.
In UVEdit SOP -> right click on selected edges -> Toggle Sew Vertices, works perfectly, it's kinda hidden though I should check right click functionality more often.