WorkingHours version: 2.6.16.0
Operating system: W10
When I print a timecard for a specific timeframe (special Export function) add option to "Flag Exported Work Units as Invoiced" which would require a new data field (maintainable) on the Work Units table that means I've invoiced this unit. When, a couple of weeks later, I print the next timecard, ask: "Select Uninvoiced Work Units?" which would automatically export only Work Units that have never been flagged before. This would also allow an "Uninvoiced Hours" total to be displayed in the app header area.
