[Scandal]

Well, I found a hard-coded solution.

1. Open the exported xml with Notepad++
2. Convert it to UTF-8 (Encoding > Encode in UTF-8 > Save)
3. Open file /includes/class_xml.php, then find:

Block Disabled:      (Update License Status)
Suspended or Unlicensed Members Cannot View Code.

4. Add below:

Block Disabled:      (Update License Status)
Suspended or Unlicensed Members Cannot View Code.

5. Then try to import *xml product via AdminCP.

All ok!

6. Undo step #4.

Done