if we remove the resident, will the invoice and payment done by them also be deleted?

No, removing the resident will not result in the deletion of any invoices or payments associated with them as the data is stored in a flat-based structure. All transaction data, including invoices and payments, will be retained for record-keeping, auditing, and compliance purposes. This ensures the integrity of financial records and provides a complete history of all transactions, even after removing the resident's profile.