While updating our App SDK to version 4.x, we cannot set eVars/props within the app. We need to use contextdata variables and then map it to variables using processing rules.
We do not want to miss the data form users who are not updating their app instantly. So we need to create a unique rule for each variable (e.g. if prop1 is not set, overwrite prop1 with contextdataprop1). After setting the rules for checking each variables, we feel like we will not have enough rules for doing custom processing.
So please - either increase the limit of processing rules (OR) let us set values for props/eVars at the app level itself.