Simplify the following text for a Grade 7 native English-speaking person.
Original: The line was reâ ' connected to the mainline at Wareham , Dorset along a stretch of the branch line that had previously only remained open to freight traffic until 2005 .
Simplified: The line was reâ ' connected to the mainline at Wareham , Dorset along a stretch of the branch line . This had previously only remained open to freight traffic until 2005 .