Thanks for contacting us.
There isn't a friendly way to achieve that. We are still considering improvements over the cloud storage used by the VS extension and we will take into consideration your case.
Shortly, any builds built via the extension are not very reliable because they are located in the cloud for limited period of time which is randomly defined.
I think that it will be best to upload your package somewhere for the use of your sales guys and share it to them. Thus they will have a stable version and you could continue your work without any worries.
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