Trouble with Engage Managed Altitude mode Airbus

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How to PUSH and PULL if LOCK mode selected.

Go to options > controls options > mouse
Select default profile > apply & save.
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Click preset manager > duplicate > ok > apply & save
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Click preset manager > reset to defaults > continue.
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Click go back > apply and save.
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In air > Press and hold Left Click Button and press Mouse 5 = PULL
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In air > Press and hold Left Click Button and press Mouse 4 = PUSH
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