This seems to have happened to me a few times: If I have been running Z5 and switch to Z12, Margin and Risk are reset OK, but Panic instead of being 0 seems to retain the 1 setting from Z5's Mode. Does anyone else see this?
I've seen it on both Demo and Real FXCM accounts, but can't say for sure that it happens every time.
I just did this: Zorro 1.6.4. Select Z5, click Test, click Stop (before Test completed), select Z12, click Test. Margin and Risk have been reset but Panic is at 1.