awk -F\; '
{
# WinDOS to Unix
  sub("\r$","")
}
function printout() {
# assemble the line in the correct sequence
  line=nr
  for (i=0; (i in out); i++) line=line out[i]
  print line
}
($3!=nr) {
  if (NR>1) printout()
  nr=$3
}
{
# cut the first three fields
  i=$2
  sub("[^;]*;[^;]*;[^;]*","")
  out[i]=$0
}
END {
  if (NR>0) printout()
} 
' imput.txt