I'm working on a documentary that has 13 chapters. I created a new project for each chapter for I wouldn't slow down my computer too much. Now I have to import all my projects/sequences onto one sequence. Which I did with no problems. I noticed though if I open an imported project and double-click a sequence I can edit them within that project and save, but it doesn't save the changes on the original sequence/project (so if I re-import the project/sequence or "open" that project it doesn't have the changes from when I imported the project/sequence and made the changes). I'm not saying that's a flaw, but is there a way to link them were the changes I make will save to the original project/sequence? Thanks for the help.
No; Importing a seq into a new project makes it a stand alone sequence. Changes dont go backward.
Keep them all in one project if you want them to interact.
The simple answer is no. If you modify anything in a parent project it will not transfer to the child project. To achieve that you need to use nested sequences and modify the original sequence, not the master sequence. Then all modifications will automatically propagate to the master sequence.