First, thank you for your response. While continually testing Blueprint, I found a more serious question: I assigned two associated courses — Child A and Child B. I tested deleting all course content from Child A through the Settings (Child B remained unchanged). The content in Child A was completely removed. Then, I used Bp Manager to try to re-associate and submit Child A. However, I couldn't submit; the submit button was disabled. But when I unchecked Child B and kept only Child A selected, the submit button became active, and Child A was restored.
My question is: (1) Why does this happen? Bp should allow associating multiple courses at the same time. But in this case, it seems i can only resubmit when selecting one child course.
(2) What the purpose for Bp if the associated course is able to delete all the content from Bp regardless locked or unlocked items.
Thank you for your time.