Powerpivot data import with trailing minus

[igoodable]

My text data file have trailing minus (for example 8- instead of -8), when I import them into PowerPivot via OLED/ODBC connection, they become blank. Does anyone knows how to this without VBA?

This is my connection string:

Provider=Microsoft.ACE.OLEDB.12.0;Data Source=\\networkname\interface\RPT\;Persist Security Info=false;Extended Properties="Text;HDR=Yes;FMT=TabDelimited";Jet OLEDB:Registry Path=Software\Microsoft\Office\15.0\PowerPivot\ACE\TabDelimited

Attached is an example of the file.

Thanks in advance!