T48G not playing uploaded ringtone

[Barnabas]

Hello,

I uploaded a new ringtone (Ring10.wav, 16 bit, 8KHz, 67k) to play on my 2nd and 3rd extensions through auto-provisioning. The new ringtone was properly loaded and assigned to those extensions. I can see configurations when I log into the T48G's GUI interface; in the Basic page of each account tab. But when I call those extensions I hear other ringtone (Ring1). Ring1 is assigned only to extension 1.

I loaded the same ringtone, the same way on my previous T28P phone without any problem.

The interesting thing is that when I am on the T48G's account 2 or 3 page (Basic), if I click on "Confirm" without changing anything, the ringtone will start working. It is as if was not completely saved into the internal ram.

I have to upload this ringtone on many remote clients, which I have only remote access. I can update their phones through auto-provisioning. How can I make the new ringtone work using auto-provisioning?
System files are attached.

Please advise,
Thank you,
Barnabas