Attribute file size limitation in Navisworks

Has anyone ever come across this? I've got a .att file that is ~4mb and Navisworks isn't pulling in all the attributes. Is there a way around this?

Thanks
Travis

we have similar problem where navis cannot get the data and our solution is to change the encoding of the att file to UTF-8.

there is an AVEVA executable that convert the encoding that is C:\AVEVA\Plant\PDMS12.1.SP4\Transc.exe.
maybe you could try it.

Use this method
https://www.avevaworldforum.com/showthread.php?15270