I am looking to but a new subscription for my business, but ened it confirmed I can upload all Forms I ahve created in my personal account and that they will maintain full functionality.
or alternatley, is it possible to transfer a subscription from myself to my business?
You can either export all of your forms to FCDT files then import them into the new account, or you can share the forms by making the new account a Co-author of the forms. Exporting/Importing has the advantage of the new account having full control of the form (as Co-author you cannot delete forms and the author/other co-authors can continue to make changes to the form). Sharing has the advantage of keeping all of your current responses.