I am assuming that the period of 'on hold' is subsequent to original contract commencement, with an instruction to stop works, or not start any works, given by the PM, which is a compensation event. I am also assuming that a further instruction to re-start, or start, the works has been given by the PM.
Note that although the works have been 'on hold' the other contract requirements would still apply, including the regular submission of a programme for acceptance. The Completion Date would have changed in accordance with the corresponding CEs, assessing the affect on planned Completion accordingly.
You mention, however, 'amendments to the contract', which I assume is a Supplemental Agreement, so the Completion Date would accord with whatever is in this agreement. Although this is not the first programme submitted for acceptance, it is essentially a 're-baselining' of the contract scope so would not need to 'follow on' from the previous Accepted programme, given the events that have occured between them.
Note that although the works have been 'on hold' the other contract requirements would still apply, including the regular submission of a programme for acceptance. The Completion Date would have changed in accordance with the corresponding CEs, assessing the affect on planned Completion accordingly.
You mention, however, 'amendments to the contract', which I assume is a Supplemental Agreement, so the Completion Date would accord with whatever is in this agreement. Although this is not the first programme submitted for acceptance, it is essentially a 're-baselining' of the contract scope so would not need to 'follow on' from the previous Accepted programme, given the events that have occured between them.