I noticed that the check "Set remaining estimate to 0 hours" appears only for the column that is last positioned. (even if this column is In Progress)
This is wrong. I expect that this check box will appear for all columns in which the Resolution of the issue wil be set to value different then "UNRESOLVED".

I have configured the GreenHopper UI in a way that there are 2 columns -> status/resolution: Done/Fixed, Inactive/Won't fixed.
This means that the issues in both column will be with resolution different then "UNRESOLVED". I expect that for moving the issues in one of these columns the check box will appear.