It has cast serious doubt over whether the document's controversial charges for long-stay parking will stay or even whether the long-awaited strategy will survive.
Its proposer, Deputy Yvonne Burford, pictured, was optimistic when, at the end of the morning session, politicians selected her report over Environment's official document – which did not include paid parking – by 30 votes to 17.
But delight turned to disappointment when, just before finishing for the day, a successful amendment, which won by just one vote, re-shaped it.
Now, instead of having a free bus service, tipped as one of its 'key pillars' and integral to offsetting paid parking, deputies will today vote on the strategy that includes bus fares of 50p – and a further amendment will, as a result of its predecessor's success, be laid today to push this up to £1.
'I'm disappointed with what's happened but it's not a fatal blow to the report,' said Deputy Burford, who was praised throughout the debate for her work in devising a well-balanced and 'integrated strategy'.