START-PROF can easily import CAESAR II neutral format files (.cii)
To import the model first export it into neutral format in CAESAR II:
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After that open .cii file with START-PROF software:
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Here is a video about START-PROF. At 23:30 the import from cii files is shown.
When will you add support for Caesar II v13?
It will be added in the next release of PASS/START-PROF. Almost finished