Hi, All.
I have a task to develop QV model for App.
I need to implement a model with the ability to keep a history of changing the bundle Rented place - Tenant.
If I choose Rented place 1.1 and time period 01.01.18 - 01.05.18 SalesAmount must be calculate like X+Y, not Y+Z (like w/o history Rented place - Tenant)
![Untitled presentation - Google Slides - Google Chrome 2018-05-18 22.27.10.png](/legacyfs/online/202850_Untitled presentation - Google Slides - Google Chrome 2018-05-18 22.27.10.png)
How to implement this task?
Thanks for any ideas!