Making changes to posted time in Sage 300CRE Payroll

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Hi I am trying to make changes to posted time in Sage 300CRE payroll. The payroll month for the time I am trying to change has already been closed. The entry is an intercompany change entry. Will the change still be accepted seeing that the payroll month has already been closed? Also any suggestions on the best way to change this time to another division (given you can only reallocate time to a different job?)