Of all her records, the microchip registration is the one whose failure you would discover at the worst possible moment: in an airport, a transit facility, or a strange city, with a frightened cat in someone else's hands. The chip itself will still work abroad, because a scanner reads the same number anywhere, but a scan yields only that number. Whoever finds her looks the number up in the registry, and the record they reach is the record you left behind, with your old address, your old phone, and contact details that may stop working the week you emigrate. Updating that record for the destination ahead of travel is therefore not administration for its own sake, but the difference between a reunion and a dead end.
Moving the Record to the Destination First
The record to update holds the chip number, the registry's name, your name, address, phone and email exactly as the registry holds them, and a second contact person, and the move changes the meaning of almost every field in it. The address should become the destination address she is travelling to, not the home she has left, and the phone should become a number that will actually ring where you will be living, since a finder calling a disconnected number from your old country has no second route to you. Email matters more across a move than at any other time, because it survives borders and number changes, so make sure the address stored is one you check daily rather than one tied to a provider you are leaving behind. Make the changes with the registry that holds her record, through that registry's own route, before she travels, while you still have easy access to your old details, your old practice, and the paperwork that proves who she is.
The Second Contact Carries the Move
In ordinary life the second contact person is a backstop, but during an international move that person becomes a bridge, because there will be hours or days when you are on a plane, between phones, or unreachable in transit housing. Confirm with that person directly, before you update anything, that they are willing to be called, that they know her, and that they know how to reach you at the destination and what to authorize on your behalf if she is found injured or held somewhere that needs decisions quickly. Choose someone who stays reachable across the whole move rather than someone travelling with you, since a contact who is beside you in the same airport adds nothing if your own phone fails. Once the registry update is saved, read the saved record back in full and check every field against the destination reality you are moving into, because read-back is the only moment when a transposed digit in a new foreign phone number can still be caught cheaply.
Keeping Her Scannable Profile in Step
The registry record is the formal route home from a chip scan, and the profile a finder opens from her tag is a separate, owner-held layer that should tell the same story during the move. Align the contact details on that profile with the updated registry record before travel, so whichever route a finder takes, chip lookup or tag scan, they reach numbers that ring in the destination country and a second contact who knows the plan. Remember that changing the profile never changes the registry, and changing the registry never changes the profile, so both updates have to be made deliberately, one with the registry and one by you. Recheck both once you have arrived and your destination phone is live, because numbers issued on arrival sometimes replace the ones you planned around. For the tag route, KinsLe offers Verified QR ID Pet Profiles, where the profile her tag opens can carry the same current details you confirmed during that read-back.