Have just spoken to my friend regarding when she got pregnant - she was allowed to wait in the list/queue until the baby was born and everything was okay. At this time their file was removed from the list/queue and they had to be reassessment as their circumstance had changed. There were permitted to start the reassessment once the baby was 6 months old, but still could not be placed with another child until 2 years had passed.

Hope that this helps.