Vessel Merge Attachment Nodes

[Jeffery Kerman]

For some reason, whenever I try to merge 2 vessels, the vessel that got merged loses it's attachment nodes, which makes it impossible unless I want to attach my base to the cargo rocket radially. This happens regardless of mods, which ones are installed,  and if i remember right, it also happened in unmodded KSP

[DeadJohn]

If I understand your question KSP is working ok. Only attachment nodes on the root part of the merged vessel are available. Here's how I merge:

Load vessel #1. Then load vessel #2 with "merge", don't try to directly attach it, just left-click to drop it inside the VAB. Then press 4 (or click the change root mode button), click on the part of #2 where I want to do the connection, and the open nodes on that part will appear. Finally, drag #2 to an attachment node of #1.

[Gargamel]

Moved to Gameplay Questions.