Parallel Processing Q when calling public API's

Version 12.0.6

We have custom programs calling various public API's to change various info on assets.

 In cases where parallel thread logic is used, I understand that a member and a group should be in the same thread in case of group reclasses.

Example

a) reclass 2 standalones into a group, all these 3 should be in the same thread

b) reclass a member from G1 to G2, G1,G2 and the memeber should be in the same thread.

Questions

a) is the same rule applicable on
  
   - Cost Adjustments
   - Salvage value updates
   - Distribution transfers
   - Asset Key
   - Asset Category changes