Hi,
1. Enabling or selecting Delta at RSA7 for default has any effect on data loading--Their is no effect on data loading,its just to see the data in both the modes.
Data in delta queue will be present until next successful load in BI.
So if your first load is successful in BI and then also it will maintain the same data which you can in check in RSA7 by selecting the option repeat delta.
Once you load the second day delta then the first day delta will not be available in repeat delta the records will be replaced by second day delta.
Thats how this works.You can give a try for more understanding on the same.
Regards,
AL