Can you change Bank opening/closing code on old statement?

We've been in production for a month and noticed errors in our cash balance. After investigation, the opening/closing balancing processes weren't using the correct codes. We addressed this issue.

However, our balance checks for every past statement are flagged in red, and our cash positioning dashboard is chaotic with errors and missing statements.

Is there a way to perform a data fix on our old statements to correct the opening and closing codes?