The two purposes of modifying workflow properties to keep the results of interim populations between two executions are D. To save data created with each run of the workflow to a list and E. To analyze data that is being passed between two activities in the workflow.

Saving data created with each run of the workflow to a list allows the business practitioner to keep track of the data generated by the workflow. This can be useful for analyzing the data and for troubleshooting any issues that may arise. Analyzing data that is being passed between two activities in the workflow can help the business practitioner to identify any issues with the workflow and to optimize the workflow for better performance.

Modifying workflow properties to keep results of interim populations serves several purposes, including saving data created with each run of the workflow for future reference, which might be used for analysis or reporting, and to analyze data between activities without needing to re-run the workflow. This can be particularly useful in understanding the behavior of the workflow and the data being processed. It's not about configuring schema (Option A) or modifying data on the fly (Option B), and while data can be exported for analysis, it is not the primary purpose of keeping interim results (Option C).References:These purposes are aligned with typical use cases in campaign management workflows where data retention and analysis are necessary for iterative development and improvement of campaign logic.