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You do not have to do a test post for your siggy items. Do what you need to do to your siggy then go back to any of your old post. It updates them. If it worked correctly it will be in your old post as well.
Re: test
You do not have to do a test post for your siggy items. Do what you need to do to your siggy then go back to any of your old post. It updates them. If it worked correctly it will be in your old post as well.