Currently, you can only transfer prototypes. Transferring ownership of other project types isn't possible.
Comments will transfer with prototypes.
When transferring from one personal account to another personal account, all current collaborators will remain on the prototype.
To transfer ownership of a prototype:
Sign in to your InVision V6 account and navigate to the Projects page.
Open your prototype and, next to the Assets tab, click the ••• (more) icon.
Click Transfer Ownership.
Enter the account owner's email address.
If you're also a member of an Enterprise team, you may notice a Select a company or team drop-down. Use this option if you need to transfer to an Enterprise account. Otherwise, click the link Or transfer this prototype to another user via email and enter the account owner's email address.
Click Yes, Transfer Prototype.
InVision will then send the recipient an email invite. After accepting the invite, the recipient becomes the prototype owner.
If the prototype causes the recipient to exceed their project limit, the new prototype will appear as locked. The recipient is still the new owner of the prototype, but they will need to upgrade their plan to access it.