I have new Zebra ZT620 printers that are going to be taking the place of our current Zebra 170xi4 printers. 

With these new printers I have installed our desired font (Arial Narrow Bold) to the printer via the Zebra font downloader tool (ARIALNB.TTF). 

A couple of things to note, our current production printers (170ix4's) utilize the ARIALNB.FNT file type which is no longer supported on the ZT620s. 

Printing a title such as "Wow™ Very Great Amazing Product" prints perfectly fine on our 170ix4's; however, when printed via the ZT620's with the ARIALNB.TTF font, it is printed like this (with the wrong special character presented): "Wowö Very Great Amazing Product" 

If I load the ARIALNB.TTF font onto the 170ix4  I get the same result. 

Does anyone have any perspective or knowledge to share on this? I have updated firmware, tried installing the font on memory and ram, etc. I have an open ticket with Zebra support as well but wanted to see if I could gain additional perspective from here.