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I think it's risky. If the paste is sticky from the sugar having absorbed humidity aka water, it might not be something the melanger can help with. Don't you keep your CB warm in a dehydrator? Put some praline paste in there overnight and see if it changes anything.
I was trying to think of a way he could 'cook' the moisture out of the sticky praline - and significant changes in texture were all that came to mind. This might be the solution.