Hello joinfof,
Thanks for reaching out to us!
Is this the previous thread that you’re referring to? In general, the additional values don’t affect the way the events are displayed and used on your site. However if you do remove some of the additional meta associated with imported events, you could run into possible quirks with using the plugin such as events importing multiple times with auto imports turned on, ability to manually import events multiple times, events duplicated in the importing options.
Let me know if this helps.
Thanks!