How to help Quality Assurance team to validate designs against development environment in an Agile project?

I wanted to know how you deal with similar situations. We are working using agile methodology so we design piece by piece of the designs. But it happened a lot that when later QA wants to check if what it is developed with our designs of course since we have been doing the work iteratively, there are pieces of the right things everywhere in JIRA tickets (we use JIRA tool). For example: There is one user story ticket that covers only the filters so it has attached the filters but the rest of the page it could be outdated since later we might have continued working in sprints on other parts of the same page. In another user story we were working on the header so the only right thing is the header.

So we end with pieces of the whole puzzle in different tickets and QA cant understand how the whole puzzle should look like. And this results in them asking us: what is the wireframes we should look to?

How do you manage the same issue with your teams? should we have a separate wireframes that has the experience updated? this would mean that the designer does more work. S/he not only has to design the wireframes for the user story but ALSO update other wireframes so QA understands how the page should be (and this one is the updated one).

Thank you in advance!