OK, I spotted one problem but it's most likely fixable considering the info I believe comes from the CDR table and the CDR reports work wonderfully now...
UCP (which I never used before today) is unable to display properly encoded UTF-8 but is very happy to display double-encoded UTF-8 (what I described above) for the CDR/CEL stuff...
Properly encoded UTF-8 (which is correctly shown in the CDR reports) is replaced by question marks and the double encoded stuff displays correctly...
Whatever recipe was used to make the CDR reports work with UTF-8 (I mean before Tstar 's fix) should most likely be used with UCP...
Thank you and have a nice day!
Nick