Same, I got the email telling me that it's in transfer.
Looking at the sample templates on the spreadsheet, it seems to tell me that this is only a notification the application is transferred to the VO that is responsible for further processing the application.
ECAS still hasn't change its status for me, so I hope that once it's properly received by VO, it will change to "In Process".
There's another part that stood out to me... My spouse is from Japan and from what I've gathered, it should be processed at Manila's VO, however, my letter says this:
This is where I find out where my VO is supposed to be.
Needless to say I am quite confused, but I guess it's a step forward!