That's true and that's the thoughts that allow me to use anything I feel like using. There may be a few things that aren't usable because of how much they differ from my idea of Glorantha (which has evolved to have more Lunar presence than my early play which was mostly Apple Lane, Snake Pipe Hollow, and White Dwarf adventures to my later play that includes Pavis, Big Rubble, and Borderlands).honestly, I find most of the adventures that are published never actually stated when they took place, and give the fuzzy time line is and can be what with heroquesting mucking about when and how things went down, run your adventures when you want them to occur. Esspecially in light of how Greg wanted Runequest to essentially be run kind of like Pendragon, and how Argath may or may not had been one person. Remember Your Glorantha May Vary and time is the great compromise.
Of course since I do play with a Lunar presence in Pavis, it's easier to adapt almost anything. If it's from a non-Lunar time, it's easy enough to add Lunars if necessary, or just run it as an area without enough interest from the Lunars to have a presence.