Can we change the exposure of some pictures without going through the whole computing process all over again?

On a large 7500 photos ortho photo project, I notice that there was some color issues on some parts of the ortho. I figured out later that this was due to a significant difference of exposures at some points where pictures were taken the day after the previous ones. Is there a way to replace the relevant pictures by the same ones with retouched exposure to correct the issue without going through the whole process (AT, reconstruction, production) again?