After performing a 1.4.3 -> 1.8.2+ upgrade, when already existing students (i.e. pre-migration) are asked if they want to continue the lesson where they were when they last quit (i.e. jump to the last page they had seen in a lesson), they get the following error message:
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Error: could not find records
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In fact, I noticed that I was getting this error whenever the lesson module was trying to update the timer_lesson table for pre-migration students. However, all my lesson timers are disabled in lesson settings. If I manually comment all these lesson_table updates everything is working fine... Any suggestion or recommendation? Is it safe to disable all references to timer_lesson table?

Regards, /Seb