I have tried on many occaions to open an old measurment correction file but to no avail. In browse filters but it doesn't seem possible.
Is there a way I can open a measurement coorection so I can see what I had done to it for it to sound good?
What software are you using? Do you still have the original sweeps that you used to build the filters?
I ran into this situation with AudioVero's Acourate. I had not been versioning my target curves (I always do now), and I found out that I was disappointed with the results after tweaking an excellent sounding filter. I tried a few times to recreate the magic to no avail…I just could not remember exactly how I had gotten there.
Fortunately, I still had the original sweeps and I did remember the smoothing preparation that I applied to them before inverting them over the target. So, I did the same preparation and then convolved the results with the correction file. this produced the target curve. The Target curve was not perfect…it had a few notches taken out where there are uncorrected nulls (non-minimum phase behavior), but it enabled me to iterate on curve parameters until I had something that overlaid the shape of the original curve perfectly.
I don't know if REW has a similar way to go about this…I've never used REW for Room EQ, ironically. I only use REW for analysis and final verification of the results I achieve via Acorate and Dirac. Good luck!