Solo to Series

The Solo tag on my two recent standalone stories keeps getting reset to Series. I realise the titles are confusing as they seem to suggest a series, but they are both standalone stories and should be marked as Solo.

The titles of both commence A decade of Big Busts followed by a number, so I can understand why people should think them a series - in one sense they are, but the stories are unrelated to each other except by their publishing history.