Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Switching Accountants - who does the audit review for past years?
It depends on what you paid for, but usually audit support is an unrelated engagement to the return preparation. If the accountant made a professional mistake, you can request correction and compensation from that accountant, other than that any accountant can help you with audit regardless of who prepared the return. The original accountant would probably be better informed about why you reported each number on the return and how it was calculated, but if you kept all the docs, it can be recalculated again. That's what happens in the audit anyway.