Your credit union may escheat checks that are over a certain number of days old, for example if you are handling unclaimed property.
First, place a stop pay on the check using Tool #324: CU Check/Bank Reconciliation, following the directions linked to below.
Second, create a journal entry, moving your funds from your check G/L to another suspense G/L configured for this purpose.
Lastly, in the case of unclaimed property, issue a check of the appropriate state from this second G/L.
Also see the Balancing Made Easy booklet below for additional information on placing stop pays on corporate checks.