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Assign a maximum ALQ value to each GLIFT producer when doing well testing in beginTimeStep(). This allows the well to be considered open. Then, later in the timestep, when assemble() is called, the full gas lift optimization procedure can adjust the ALQ to its correct value. It is also observed that in some cases when gas lift is switched off by setting ALQ to zero, and later in the schedule is switched back on again, it might not be possible to determine bhp from thp for low small ALQ values. Instead of aborting the gas lift optimization, we should try increasing ALQ until we get convergence or until the maximum ALQ for the well is reached.