About the Server Shutdown Or Changing Map Without Normally Ending the Round

I was playing in a server, unlocking the dogtag of 92 strap when this time the server shutdown, and after that I noticed that stats I just played didn't show up correctly in both battlelog website and in game client,  as if the statistics just disappeared without any trace, so my only question is whether it will come back someday or I have to get the dogtag twice, the statistics won't come back?   As far as I know, both server shutdown and abnormally changing map won't have the statistics come back, but I am not certain, glad if somebody can reply, thx