Atlas Seed Help (Spoilers)

Hello, r/NoMansSkyTheGame, I'm very new here to new Reddit, but I have run in to a bit of a quandary and this looked like a friendly place to seek help.

Having completed the main story, I was rewarded with >!the Remembrance blueprint, which requires the Heart of the Sun atlas seed. However, I don't have the blueprint for it. Google tells me that I should get it at the end of the Atlas path, but that doesn't seem to be the case. The last seed I have is Modified Quanta. When I visit an Atlas Station with a Modified Quanta in my inventory it prompts to birth a new star, but again my Googling tells me that I should need the HotS to do this. Am I doomed to start over if I want to unlock Remembrance?!<

^(Also I saw No Spoilers is Rule #1, so to be safe I've put everything in a spoiler tag, hope that's right!)