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Revert "fix(api): fix aspirate/dispense while tracking move to (#17854)" in chore_release-8.5.0#18472

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May 30, 2025
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Revert "fix(api): fix aspirate/dispense while tracking move to (#17854)" in chore_release-8.5.0#18472
ddcc4 merged 1 commit into
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@ddcc4 ddcc4 commented May 30, 2025

This reverts commit d06a5f3.

Overview

In PR #17854, @caila-marashaj deleted the operation_volume parameter from the call to move_to_well() in aspirate_while_tracking.py, asserting that "It was previously called with the operation_volume parameter. This is wrong because we need z tracking to start from where the meniscus currently is, not where it's going to be."

That PR was checked into edge. I picked that PR into chore_release-8.5.0.

But Caila's change somehow disappeared from edge entirely. The code in edge now does have the move_to_well(operation_volume=-params.volume) parameter. @ryanthecoder thinks Caila's change was probably deleted from edge by one of the mergebacks from chore_release-8.4.0 into edge.

Ryan says that we do want move_to_well(operation_volume=-params.volume). So now I have to revert Caila's change in chore_release-8.5.0.

Test Plan and Hands on Testing

I'm taking Ryan's word for it that move_to_well(operation_volume=-params.volume) is correct :)

But let's run the CI tests to see if everything passes.

Risk assessment

Low I hope. Ryan says that the version with move_to_well(operation_volume=-params.volume) is what we've tested and released, so we should use that.

@ddcc4 ddcc4 requested a review from a team as a code owner May 30, 2025 21:08
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lgtm

@ddcc4 ddcc4 merged commit 7ae7ec7 into chore_release-8.5.0 May 30, 2025
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@ddcc4 ddcc4 deleted the revert-17854 branch May 30, 2025 21:28
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