"If your case was transferred, USCIS will send you a notice listing the transfer date and where your case will be processed. Your original receipt number will not change. You should reference your original receipt number and indicate your case was transferred to a new location when making any case status inquiries."
USCIS – Workload Transfer for Various Forms
Effect on Customers. If your case was transferred, USCIS will send you a notice listing the transfer date and where your case will be processed. Your original receipt number will not change. You should reference your original receipt number and indicate your case was transferred to a new …