I have an org file for a long-running project. It's getting hard to manage because there are lots of different tasks, events, etc.
I think I want to create an "archive version" of that file, which would have the same structure but store items, say, with a timestamp older than 2 months. That would require two basic steps:
extracting a subtree from the original file;
merging the extracted subtree into the archived version.
I could implement that, but I wonder if there is any existing way for that? Or some other approach that would address the same issue?
