Update the identification records first
A Havana Brown's move begins with the records that bring her home if she slips out. Update the microchip registry with the new address and the phone number you will actually answer during moving week, and keep the written confirmation. Replace the collar tag, and make sure the tag matches the registry entry. Havana Browns are a rare breed, so a neighbour who finds one may describe her simply as a brown cat; a correct chip and tag turn that vague description into a direct route back to you.
Brief the new veterinary clinic properly
A new clinic may have little experience with Havana Browns, so the transfer paperwork should do the introducing. Send the vaccination history, any past health notes, and the name of the food she eats, plus a recent photograph showing her warm brown coat and green eyes. Note her temperament too: Havana Browns are famously people-oriented and often follow their owners from room to room, which matters during a move, when a cat who shadows her owner is at risk of slipping through an open door. A clinic that knows her normal behaviour can judge whether restlessness in a new house is moving stress or something worth a closer look.
Refresh the quieter files carrying the old address
Next, update the files that do not announce themselves until they are needed. Change the address on any pet insurance record, any boarding or grooming registration, and any delivery account for her food or litter. Tell any regular sitter, neighbour, or friend who holds a spare key, and give them a fresh emergency sheet with the new address, the new vet's name and number, and a note about her habit of staying close to people. Because a Havana Brown seeks company, the sheet should also name the quiet room she will stay in while movers work, so helpers do not open that door by mistake.
Carry a moving-week folder for the Havana Brown
Keep one folder beside the carrier on moving day with the microchip confirmation, the vet transfer summary, the new tag details, and the emergency sheet. Add her feeding times, her litter preference, and a current photograph. If she escapes among the boxes and open doors, that folder lets you hand a searcher an accurate description of a rare brown cat with green eyes, rather than relying on memory under stress. It also lets a new sitter settle her quickly, since the folder explains both her routine and her companionable nature in one place.
Verify every change after the boxes are unpacked
Once the move is over, re-check each record, because the update made in a hurry is the one most likely to carry a wrong digit. Confirm the microchip registry, the new clinic file, and the insurance and boarding records all show the same new address and phone number. File the corrected copies together, and replace the emergency sheet held by any key holder. KinsLe supports that tidy finish, because a Havana Brown's Pet Passport in KinsLe gathers her records into one portable packet you can open for a new clinic, sitter, or boarder after the move.