I’m a Logseq novice, but I’m happy to help workshop ideas.
If you’re just editing order and organizing thoughts you can reference blocks between pages with ((double parentheses)). Those could be as their own line/bullet, or even in-line with other text. So with that you could make a new page (or block in your daily journal) with new text summarizing your findings and block references to pull the previously taken notes in whatever order works best for you.
If you want the existing notes to be referenced but also cleaned up for presentation you could do that and use block references as mentioned, or you could use an Alias to link to the block while preserving its content. It depends on how you want to cite yourself, so to speak, and if you want to preserve your existing notes word for word.