I have SFP14 which came with Vegas Pro 18 and it is installed on both my desktop and laptop. 'Stereo to Stereo - Vocal Cut (remove centre material)' is the last preset in SFP14 as it is in SFP13. Also, SFP13 has 17 presets whereas SFP14 has 19 presets. Neither 13 or 14 has a preset called 'Stereo to Stereo - Vocal Cut Invert Channel 2'.
Results of 'Remove center material' depends on the mix of the song. Personally have have never needed a feature of that sort (at least that I can recall). I did however experiment with Spectralayers Pro 7 'Unmix' tools (included in the SF Pro 14 Suiteversion), I was impressed .. is an understatement.
btw @Clive-Delves, welcome to the Magix Sound Forge forum and best wishes for 2021.