I checked the Preamble section in a couple of our MEL's (A320, B777) ... they both read the same as far as repair interval is concerned.
It is stated that ... (after rectification), unless the aircraft operates one flight leg free of the defect when the affected system is operated, then MEL is re-instated to the original time of reporting of the defect.
Is this policy universal? You might want to check your MEL Preamble to see what is written.
Hope this helps
cod