I formatted an external drive with NTSF using Windows 7. I then connected this drive to a Mac which has Paragon's NTSF for OSX installed and proceeded to move a large collection of files to the external drive. On connecting the drive to the Windows system again I am able to read the files, and I can create new files, but I cannot modify/rename the files that were written by the OSX system. They all have read-only flags set and these cannot be changed. Is this normal? Or is there something I need to do to enable full write/read access?