Only in the gateway’s Traffic page, or also in the application/device’s Data page? Only when you see it in the Data page in TTN Console, you know for sure that the device’s configuration matches the secrets that TTN knows, and that TTN has accepted the value of your uplink counter. (The latter check may be disabled, for testing.)
Here, it’s the other way around: are you only seeing it in the application/device’s Data page, or also in the gateway’s Traffic page? (Or even in the gateway’s log files?) Screenshots will help confirm all this.
Aside:
Beware that, after testing, you’re only allowed to do this at most 10 times per 24 hours.