Why I-94 AOS changed to DA on my 2nd entry

I used AP to travel twice to Canada recently. Just noticed that my I-94 was changed to DA on my second entry to the US. What is the meaning of DA? Any suggestions? Thanks.

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derivative adjustment i guess -xlc- 給 xlc 發送悄悄話 (0 bytes) () 07/25/2006 postreply 17:35:31

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