How do you handle the roll window when a front-month index future is near expiry?

When the front-month contract approaches expiry, volume and open interest tend to migrate to the next contract, and the price gap between the two can distort charts, levels and any indicator that was built on one series. Traders who stitch continuous charts handle this differently: some use back-adjusted series, some use ratio adjustment, and some simply mark the roll date and ignore levels drawn across it. The practical question is how the roll changes what a level means. A support zone drawn on the old contract may not map cleanly onto the new one if the spread is wide or the basis has moved, and that affects both how you read the chart and how you size exposure around the switch. Historically the spread between adjacent quarterly index contracts is usually small relative to the index, but it does widen around stress and rate surprises, and public exchange data on roll volume is a better source than memory for how the migration typically unfolds. I am not certain of the exact typical timing for every product, so check your own feed's roll calendar. How do you decide which series your levels live on when the roll and a data release fall in the same week?