Does the interruption of making up missed prayers invalidate the reward for the days that were made up?

There is no disagreement that intentionally missing a prayer without a valid religious excuse is a grave sin and a major transgression, due to the severe warnings against it, such as Allah Almighty's saying: [There succeeded them later generations who neglected prayer and pursued desires; so they are going to meet evil. Except for those who repent] (Maryam: 59-60), and His saying, glory be to Him: [So woe to those who pray, [But] who are heedless of their prayer] (Al-Ma'un: 4-5). It is obligatory for whoever does this to repent and make up for the prayers they missed, knowing that they will not receive the reward of one who performed them on time, for the Prophet, peace and blessings be upon him, said: "Prayer [performed] at its [prescribed] time."