Hope you got what @DavidSmith illustrated below. Please use subsidiary views to keep your module/model efficient.
If I got your question correctly, you can simply use SUM and get the data from the source to the target module. For Example Keeping rest of the dimensions same between both the modules if you want to bring the data w.r.t Cost Centre in the target module, you will add cost centre as a dimension in the source module and will use the formula as - Amount[SUM: Cost Centre] where Amount is the number formatted line item in the source module
Cost Centre - Is the list formatted line item in the source module or List formatted property in any of the dimensions of source module.
Hope that helps. I would also request you to use "accept as a solution" feature - when you feel that that you got what you wanted - so that community knows that the solution has been provided to that particular query.