Apple Health still shows data point on graph after it has been deleted

I use the Omron Evolv blood pressure monitor and the OMRONconnect app to transfer data to my iPhone 11 Pro running iOS 16.2. Data transfers fine to Apple Health. After logging many entries, I deleted two unneeded blood pressure entries from one day using Options/ Show All Data/ Edit/ Delete.  The two entries were successfully deleted from the list, but the corresponding data points persisted on the graph. That remaining "rogue" graph data impacts the Summary averages and ranges. This seems to be a bug. FWIW, I also deleted the data from the OMRONconnect app sucessfully. This is an ongoing issue as I occasionally will have data I need to delete.

How can I delete the rogue data from the graph? I used the friendly delete facility that Apple Health provides; I'm imagining there would need to be another method from Apple, or perhaps a third party tool?