Hey @thejonfedor , this tip by @Bastien_Siebman might come in handy.
It’s for migrating single-select fields to multi-select fields but you could apply the some logic for migrating your tags to custom fields 
Goodluck!
Hey @thejonfedor , this tip by @Bastien_Siebman might come in handy.
It’s for migrating single-select fields to multi-select fields but you could apply the some logic for migrating your tags to custom fields
Goodluck!