Hi Astor
I didn't know that the VPL activity has a setting which "protects" it from the grade book. That is a good solution. Problem SOLVED.
About the side note: Could you be more specific about the multiple usage of a VPL activity in VPL questions? I mean, does the VPL question offer so much variations so that different questions in the same quiz can be based on the same VPL activity? Or, do you mean to two questions in two quizzes can be based on the same VPL activity? This and the other question re-use are familiar to me. Although all our prod. sites are on Moodle 4.5 LTS, we've studied the new question sharing concept in Moodle 5.x and hoping to migrate some sites to Moodle 5.1 in the summer break. So during this transition period, should handle both versions.