How do I re-upload deleted pack in Smart Gallery? I was told that "All pack items have not been modified. No need to upload". (Developer Center)

Please re-upload the pack via the following method:
1) Right-click on the blank space of the Custom Pack view and create a new pack.
2) Enter the old Pack, select all the items, right-click and move to the newly created pack.
3) Right-click on the new Pack to load the thumbnail.
4) Now you can upload again.
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