Old tickets randomly reappearing on Expo KDS

[alexhkelly1]

I'm having an issue where five to ten old, sold tickets will periodically reappear on the Expo KDS screen. Most of the time, the tickets are around 5 hours old; and there is usually a common item across all the checks. That common item could be something different each time, though. Fortunately, these checks never fired to the Prep Stations again, but it's a big inconvenience for Expo.

For example, there were 5 checks that reappeared almost 5 hours after they were originally fired. Each check had multiple items, but there was a Cobb salad on each check. 

Another time, 4 checks reappeared 5 hours later and each one had a BBQ Burger as the common item. 

Has anyone else had this happen? What did you do to stop this from continuing to happen?

[au79teahouse]

We used to encounter this issue from time to time last year. We didn't do anything to solve the issue. It just stopped and haven't seen this issue recently. I would say it's likely a sync issue with your KDS. Maybe try to clear the cache and see if it helps.

[alexhkelly1]

I did that, but the problem still occurs.

[au79teahouse]

1. Does the issue happen across all your KDS?
2. Is your Expo KDS hardwired by an Ethernet cable or it's connected wirelessly? 
a) If connected via WiFi, try to run an Ethernet cable and see if that will resolve the issue.
b) If connected via Ethernet cable, it is connected directly to a switch or to a Toast printer?

[alexhkelly1]

1) When they reappear, they only do it on the Expo screen (prep stations are unaffected).  The checks seem as if they're just being unfilled just one level, because the items still have the green check mark next to them and aren't reappearing at any Prep Stations.

2) It's connected via ethernet, directly to the wall data port.