In some variations, images I have used single, or in some variations gallery images have also been used along with single. It should show as it is used. But it is not showing like this and the customer is facing a problem as to which image is perfect. Please resolve this issue urgently. You will know by watching the full video.
I understand your point, but select the first Model Name [Utterly Butterly Ghee Pot (With Spoon)], after choosing the sixth Model Name [Swadisht Checkers (With Spoon)], only then will you see the variation gallery image not getting removed.
When you upload the images for a variation gallery and on the product page when you click on the attribute. It shows the specific images that you have uploaded for that variation. You have more than one attributes. You need to choose the variation and check the issue https://ibb.co/vktKYX1
You need to clear the previous preselected variation then check the variation images for each variation: https://ibb.co/5FfZW2G