Saving layer exposure times dos NOT work

I use version 2.12.3.0 Z-Suite.
I want to save the layer exposure times of Liqcreate StrongX for different layer thicknesses (0.1 - 0.05 - 0.025 mm) in the material group “EXTERNAL” and material “EXTERNAL” in a PROFILE name “Liqcreate StrongX” but the software doesn’t store these values. Each time some default values overwrite my chosen values.