Hello David,
the AAVSO charts that are _plotted_ with dots for stars do have stars missing in some areas. But you can also request the Variable Star Plotter to send back a DSS _image_ of the field instead (there is a tick-box in the VSP set-up box for that). If you do that, the image does show your star I think. Here’s the link to a chart that shows the field (I hope it appears correctly in the post as it’s a very long address!):
All the best,
Jeremy