(!) Asterisk next to external FX in VST window

Over and over again when I open an arrangement and don’t hear one of my External verbs I see two of them: One with an orange asterisk next to it and another without. I don’t know why this is happening and can’t determine which one to delete. Sometimes I delete the one without the asterisk and connect the other one and vice versa. What happens is
that I am opening other arrangements with no verb sound because of this. I only want one to be there. Any suggestions. Can’t find this in the manual.