Migrating from Insightly Classic to the New Version

Hello,

I am a big fan of Insightly and I am ready to migrate away from Insightly Classic.  When I update to the new version of Insightly, will all of my years worth of custom fields, notes, tags, pipelines and activity sets all transfer over with ease?  or will I have to set EVERYTHING back up again?

Once I click the button "Switch your team to the new Insightly User Experience. Learn more." I won't be able to go back and I need to know if I am in for an easy transition, or a month or two of work before I am operational again?

Please help!

Thank you!!