mah, NY will not reply, but you can send them a case-specific email to give them the dates that you and your wife completed the medical. It won't hurt, but again, they will not respond.
E-cas is updated by the visa offices (e.g. NY, Buffalo), not Ottawa, so until a visa officer reviews your medical info, it will not show on e-cas - even then, it may take up to a month for the system to update...
If you want more details about your file, you can request your CAIPs notes. You have to be in Canada, it costs $5, and it takes about a month. The CAIPS files are difficult to interpret, but you can find guides to codes on this site.
http://www.cic.gc.ca/english/department/atip/form-imm5563.asp