Yes it can be, providing you are only moving planned Completion and not Completion Date. That is why these items are a requirement to show separately in accordance with the first two bullets of clause 31.2. Acceptance of a programme is accepting that it is realistic, achievable and complies with clause 31.2/32.1.
For example, if there has been a compensation event that has held up the critical path works by three weeks, you can reflect this in the programme and planned Completion will have moved out by three weeks. Assuming on the last Accepted Programme both planned Completion and Completion Date where the same, planned Completion will now be three weeks later than planned Completion. If the Project Manager accepts this programme, they are not necessarily accepting liability. The Completion Date will only move when the compensation event becomes implemented - i.e. agreed in terms of time and cost. At this point if the Project Manager has agreed three weeks delay as part of the CE assessment than Completion Date can now be moved and will catch up with planned Completion once more.
The rules for programme acceptance are the same across all of the ECC options.