You don't need to move the whole Excel sheet into AIMZ. The costs and revenues are already in AIMZ through contracts, change orders, Setup and Operation and the Billing Schedule. What you bring from Excel is how the amounts are distributed across the months. You enter that in the Liquidity grid.
How to do it
Make sure contracts, change orders and the Billing Schedule Client are already in AIMZ.
Go to Liquidity and find the line in the grid, for example a contract.
Copy the monthly amounts for the same line in Excel.
Click the first month on the line in the grid and paste.
Repeat for the lines that are not distributed automatically.
What is distributed automatically
Contracts with a payment plan to the subcontractor.
Setup and Operation.
The Billing Schedule Client.
You don't need to enter these from Excel. Change the payment plan or the billing schedule instead.