Thanks for the response, Nick.
The Adata SDHC cards actually performed well as the quality of the AVCHD video was quite good. This is the video shot AFTER the card writing error. I took the cards to a local camera shop but their software–Image Recall– was unable to see the clips. These SDHC cards are brand new and had been formatted by the Vixia HF 200 prior to using. Google searches have been futile at this point on how to retrieve these .mts clips. At this point, I will just put these SDHC cards away and hope that some type of .mts AVCHD retrieval software is developed in the future. I will try the PC route as I have an older laptop that might see these files.
thibojb2