Geometry file changes automatically

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Geometry file changes automatically

Hi everyone,

I was running a 1D steady flow model with 2 geometry files and 1 steady flow data file as below:

Plan A - Geometry A + steady flow data

Plan B - Geometry B +steady flow data

I first run & save plan A, then create another plan B. But after I've run plan B with geometry B, if I go back to look at Plan A, the geometry data automatically became geometry B. If I run plan A again with Geo A, opening plan B would end up with Geo A again.

I'm still quite new to HEC-RAS, I was wondering if anyone could tell me what I've done wrong?

Thanks a lot.