HELP!!! calculating LOST CUSTOMERS

HI friends,

I am creating a customer lost calculation and I'm able to calculate it in the subtotals correctly but unable to place it in the row level as the customer does not appear that month. I show you:

Also I would like to calculate the money that the customer 493 spent in the past month. But appearing in february in it's new line.

Please fins attached the PBI file HERE

https://drive.google.com/file/d/13Bdh978nHmrAZWro06cOMaQ2J4ggTV0e/view?usp=sharing

Thank you very much!!!