As of v0.9.3
“When using global search, you can now copy the search results file list. This can be optionally formatted as wikilinks and/or as lists.”
I will return and edit if this is wrong, but I am pretty sure you can search using the following assuming your note is named “my note”:
content: [[my note]]
And then use the new awesome feature described at top. It is a button icon that looks like two files in the search pane.
I only wish this was around a little earlier on, when I was regularly needing it a lot. I am sure I will be needing it in future projects, but just seeing your post is bringing back memories. I had quite a slow and annoying process for accomplishing it using OCR on screenshots of backlink pane list then using a find and replace to append the double brackets on each entry. See here Copy page links from Tag and Backlinks Panes to clipboard
Hope I got it right and that it helps you.