請問各位老師：是否我的485已經自動link到新的140上了？

I filed both 140-NIW (with 485) and 140-Eb1a in July 2007. My NIW was approved last December and Eb1a was approved this week. In my Eb1a approval notice, I noticed that the A# was the same with the one I got from my NIW and 485. My question is:

Does this mean that USCIS noticed the existence of my 485 originally filed with NIW and relinked it to Eb1a already?

Thank you very much!

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NIW:
TSC
PD:07/2007
RD:07/2007
AD:12/2007

EB1a:
TSC
PD:07/2007
RD:07/2007
Transfer to NSC 06/2008
AD: 09/2008