it is possible to remove the last sample entry in BLX even after it has been accepted. But this can only be done for the very last sample.
But right clicking and deleting dont work. when deleting a sample in the sample viewer there is no information sent to BLX.
So to "remove" a sample it has to be
REJECTED instead. This has to be done in the data window. See image.
Here the sample have been rejcted (by selecting EDIT and then Reject) and then the sample is rejected and when doing a refresh of the sample viewer the BLX control actions have gone.
This only works for XRF analysis. Not for Online data.