Never updated such a n old bundle, try asking their support first, just in case, mention the specific bundles - if they fail you reach out to your account manager

Sent a message to our Avalara account manager. We will see how it goes. Does Avalara usually support the integration sides of things with the normal support?

well they are usually pretty helpful yea, but I guess it somewhat depends how big a customer you are

If you have time, can you expand on reaching out to them before making the big upgrade? What exactly would you think they would help with?

It was probably that specific version upgrade, if there was anything to consider or extra steps needed because of being such an old version

Gotcha.