Planned Exploratory Test Charters - Categorisation in JIRA

I've created a number of these over time documenting the testing of various major features, and at the moment they are all under a single 'Task' in JIRA which is a bit messy, but very easy to find as they're always in one place.

However, should these really be linked to each Story they test, or under a separate 'Requirements Trace' linked to that story?

Thank you.