hello user. thanx for contacting HCM for your health related query. I understand your concern, If you are on methadone for a year - your body should have developed a steady level of this drug and thus even if you miss it by a day or so - you will generally not face any serious withdrawal symptoms , so do not take buprenorphine or other opioids in between - just take some painkillers like ibuprofen if needed - nevertheless now , as you have got your methadone back - restart it and as the receptors will be filled again , any suboxone withdrawal is unlikely . hope it helps , take care