I wrote:
My understanding is that the 60-day freeze was only on further outbound transfers.
Gandi.net _allows_ me to toggle off "Transfer Lock" (I tested), but the caption warns "Please note that a transfer out may be blocked by the extension's registry policy during the first 60 days following creation."
ICANN has alleged documentation about the 60-day thing, here. https://www.icann.org/resources/pages/name-holder-faqs-2017-10-10-en
Why can't I transfer a domain name I just registered to another registrar?
There are certain situations that can prevent a domain name from being transferred to a different registrar, such as a new registration. Your registrar may deny a transfer request if the domain name is within 60 days of initial registration. Another situation is if the domain name is subject to a 60-day Change of Registrant lock. You cannot transfer a domain name to a different registrar within 60 days of making changes to the registrant name, organization or email address (or the Administrative Contact email address, if there is no registrant email address). At their discretion, some registrars may provide an option for you to opt-out of this 60-day lock period. However, this rule is in place for your protection against unauthorized transfers and the registrar does not have to offer this option. If your ultimate goal is to transfer the domain name, you may want to consider completing the transfer process before changing your contact information.
Registrars also have the option of denying a transfer request within 60 days from when you last transferred the domain name to a different registrar. You may have the option to change web-hosting providers instead of registrars to avoid the inter-registrar transfer process (and lock) altogether. You may also update your domain name's nameservers or change the hosting IP address assigned to your domain name. Check with your registrar and/or hosting provider to see what options you have.
Par for the course for registrar documentation: Maybe you'd be permitted to transfer within 60 days of a transfer or of making certain changes, if you need to, or maybe not. Magic 8 Ball hazy!
However, as goofy as that FAQ answer is, the tip about _not_ touching any of your contact details on any domain you may soon wish to transfer is an excellent one.