Ray:

The way a deal with these situations is as follows.
First, I choose to start all over and define the original baseline based on the original contract documents and original conditions. I place my mind back in time when the project has not started yet. My main point of reference is the contract. So, the initial baseline has to represent what the contract says. Among other things, the contract usually does not say anything about the project being in progress. It describes the agreement among the parties of how one is going to build the project and the other how is going to pay for that, in very simple terms. Notice the future tense used, nothing has happened yet.
After you agree on the baseline, then you use a copy of the baseline to update progress regularly and use the baseline as a reference for control.
If there are changes from the initial contractual conditions, then an approved change order needs to be issued. Then the initial baseline needs to be revised according to the approved change order and used as the current baseline.
Anything that deviates from the current baseline is the responsibility of the contractor, who needs to implement a recovery plan at their cost.
I hope this helps.

Tomas Rivera

I consider Baselines to use Fixed Units and Durations, therefore the dates are to be fixed. Baseline Schedules represent the original plan (maybe achieved or not).
Current Schedules will represent the actual conditions. It’s up to you if you want to consider Re-baselining your Schedule.