all my vst3 pre-sets in every plug-in are shown twice

Having a clean up session and finally got around to trying to solve a problem I have had for a while. I open a plug in or VST instrument [ones included with Nuendo like for example Groove Agent] and when I go to select a pre-set, all are there twice. I assumed it would be to do with the moving of their storage position a few versions ago but doing a windows search only comes up with one version and I excluded the roaming folder in media bay. Getting media bay to re-scan hasn’t helped. Is this an easy problem to solve?