Oracle Migration Tool On Demand - Does the Upsert command remove and create again the customized con

For example, if I follow the following steps, am I going to have the same customized configuration data in both environments?

Case A:

Step 1: I perform command ReadAll from environment 1
Step 2: I perform command Upsert to environment 2
Step 3: I remove some customized configuration data from environment 1
Step 4: I perform command ReadAll from environment 1
Step 5: I perform command Upsert to environment 2

Case B:

Step 1: I perform command ReadAll from environment 1
Step 2: I perform command Upsert to environment 2
Step 3: I modify some customized configuration data from environment 1
Step 4: I perform command ReadAll from environment 1
Step 5: I perform command Upsert to environment 2