How to addons work (for dev and production)

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I have a site with two locations dev/local and production/online.

If I purchased the ecommerce addon, it prompts me to add it to my current project (local) but I need it for both (dev and production) can I do this?

 
12345j replied on at Permalink Reply
12345j
yes, you can. just download a copy and install into dev manually.