When using Lightroom, I edit a photo in Topaz Adjust. When the edited photo is imported back into Lightroom, some of the metadata is missing - namely the focal length, ISO, shutter speed, and aperture. I notice these things because they leave a big gap in the Loupe info, which makes me think that other data may also have gone missing.

Is there a way I can use Lightroom to restore this data to the edited image?

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*NOTE: Could someone with appropriate rep please create the tag "Topaz-Adjust" and/or "Topaz" for me and add it to this question? Thanks.*