Effective management of data changes

Question

I have a table called Bookings. This table contains data representing a booking made for a particular service, with many variables.

A while ago I came across a problem w

Answer 1

Instead of applying the modifications to the original record, what if you did the reverse and applied the original record to the modifications? You could modify the modifications table (or a new table) to hold the original record with the modifications applied to it, and direct your searches there.

Another thought is that if the financial data is all that needs to be preserved, why not save it in another field or table and reference it when you need it? I agree that a re-design is probably the best/smartest approach for a long-term solution, but I figured I'd put my ideas on the table in case they can help.