Hello all.
Hope everyone is having a great night. I am fairly new to Inkscape, but am learning with this forum.
As of this time, I am using this with Sign Blazer and a plotter.
I am trying to push what I can do, but have ran into a snag. I uploaded a friends picture of his car into Inkscape.
I used the trace bitmap tool with 3 colors, and 3 scans. Tried to keep it as simple as possible and yet keep the form.
Edit>Select all. Object>Group. This kept all layers together for me. Went through and deleted a lot of the background
nodes. Sent it to SB to see what it looked like. Only showed 1 layer. Didn't surprise me. Lol
When I click on each layer (by color). The nodes appear separately for each layer.
What I would like to do is show all nodes for all layers at the same time. And be able to connect them all together, so that I turn 3 layers into 1.
How do I achieve this? Is it possible, or is there a much easier way to go about this process?

Hi.

You are a bit confusing, seems you use the word "layer" for each path.
By the auto-trace you will get a group of three paths, on one layer.

You can select all paths inside the group, and change to node edit mode to see all nodes.

To "connnect" the paths you would need to
exit the group if you are inside it (if you can select each paths alone you are inside) -press Ctrl+Backspace,
ungroup paths (Ctrl+Shift+G),
and combine the paths together (Ctrl+K).

Result may not be satisfactory, maybe if you show an image and what you want to achieve, we could give you a more focused answer.