1. Instructor creates a question-pool question in site A, includes an attached picture . It now has site A's id.
2. Instructor creates an assessment in site A by copying that question from the question pool. The students are able to see the picture in that question when they take the assessment.
3. Instructor goes to site B and he wants to reuse the question from the step 1 in another assessment. Therefore he creates an assessment by copying the question from question pool he made in site A, and publishes it. The students from site B take the assessment and they are not able to see the picture in the question.