Deleting individual nodes

Hello everyone:

New to the full version of QCAD. Any suggestions or ideas as to how to delete individual nodes? I recently purchased a tree DXF, but it came through as a three part panel drawing, so what I would like to do is delete the individual panel lines, and join the three panels as to wind up with an individual drawing that I would like to cut (CNC plasma) on a single sheet. This DXF is readily avail on eBay, Pintrest, etc.
29.pdf (52.4 KB)

Hi,

This is basically the same tree mirrored and free:
https://free-dxf-vectors.com/en/garden/tree-dxf-cnc-dxf-for-plasma-laser-waterjet-plotter-router-cut-ready-vector-cnc-file/02ac0

If the panel boundaries are line entities, removing them is merely by selecting and ‘Delete’.
If they are part of a polyline one can use Break Out Manual (B2) and two clickpoints.
Or Divide (DI) (cutting) and remove what is obsolete.

For joining the panels I see some overlapping shapes …

Regards,
CVH