Using same control budget for 2 companies

Summary:

We are using same control budget for 2 companies: 100 and 150.

What is the difference between:

- New Budget or replacement of current budget

- Addition to or subtraction from current budget.

For example, we have to companies 100 & 150 using the same control budget.

If I'm separating the upload for 2:

First load for company 100 with control budget X.

Second load for company 150 with the same control budget X.

Are both of them Initial or the second is Revision?

Do we need to use:

- New Budget or replacement of current budget

- Addition to or subtraction from current budget.

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