During my initial testing of Houdini I tested importing some existing polygonal object. A few hundred k pts, maybe half amount of poly's.

Wanting to focus on a specific volume, I started by doing viewport poly selections and hitting the Delete key. This created a long chain of ‘blast’ nodes.

I can obviously put them all in a box (screwing up ‘L’-key auto-layout when that box is collapsed), or manually copy every selection list each of them have into just a single one, which is exactly the repetetive work I'd expect to avoid.

Is there a way to (destructively, as an interactive edit operation) combine all (consecutive) blast- (or any grouping, I suspect?) nodes into one?