We just moved to hosted a few weeks ago, this has happened to me several times. If I print to SV I then realize it wasn't opened and sign in to SV via the hosted environment and the PDF will then upload to SV. Not sure how deep that queue can get but that's good to have work. 

I personally use SV in my local environment with the exception of printing PDFs and getting PDFs to attach to a return. 

I too wish there were upload notifications but even better wish the program would start up on start as it made it hard to forget to sign in when that happened.