Move cell based on IF statement

I want to move data from one cell to another based where the value in column B is >0. The values in column B are formula driven from a different sheet and attached to the relevant account number which will constantly be changing, as a number is entered into the enter value sheet it will populate against the relevant cell in totals sheet.

The problem I have is that when a new value is entered previous data will disappear as the formula criteria isnt met. I want to capture the >0 value as it appears and move it so I can total it elsewhere. I apologise if this is garbled I am very new to VBA. Can anyone help please? I have attached my spreadsheet for clarity. Thanks!