Bug? Billingcodes/Web-report/API

[MW_VNET]

if i set a billingcode on my client (eg. **1234)
everything is fine, the code appears in serverlog,webreport,exportfile

BUT
if i fire a call over the API (/ivr/PbxAPI.aspx?func=make_call&from=666&to=666666**1234&pin=xyz)
the code IS in serverlog and on client-display, BUT NOT in webreport/export