I found out that this happens only when the AssetsFix file can't be opened between test runs (e.g. because it has been opened in a text editor). I didn't notice it before. My theory is that Zorro somehow remembered the rollover value from the previous test but not the other asset params. Therefore the value 142160 which is 100k times the right value. So probably it's just an unexpected behavior in unexpected situation, not real issue.