When a user in moodle is coming from Mahara (via xmlrcp), he can't send artefact to his portfolio.
It may come from the limitations to roaming user but they should at least be able to send things to the place where they come from...
To see the issue :
- configure the network in mahara
- configure the network in moodle
- allow right to export data
- Connect to your mahara platform
- roam to moodle
- try to send artefact to your portfolio