Should we use SPAU and SPDD after every SAP Note Implementation

Hi All,

We applied support pack and found many objects in SPAU and SPDD for correction. As objects get picked up we fixed all but it took long time to correct all. I have few queries on this and if someone can suggest on same it would be really helpful;

1. Can we do SPAU and SPDD through out the year? I mean after every SAP note we apply or manual correction we do?

2. Once we have corrected the object by accepting the Modification or Reset to original, when we do patching again same object will get picked up in SPAU again if SAP modified it in subsequent patching?

3. what is a best SAP practice for use of SPAU and SPDD