After creating a sketch using Continuous Auto Dimensioning, editing one sketch
dimension triggers other dimensions to be scaled with it, which makes the whole
sketch to move completely out of position, which is a different behavior than
in NX10 and prior versions.
In this case below, you want to edit 0.2 dimension to 2, but you want to keep 0.5
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However, you might get this:
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Solution
Go to Preferences --> Sketch --> Session Settings --> Toggle off "Scale on
First Driving Dimension", then you can change dimension .2 to 2.000 without modifying the 0.5 dimension.
As the doc explains how : "Scale on First Driving Dimension"works:
Uniformly scales the entire sketch the first time you convert an auto dimension to a driving dimension, so toggle it off would give you the desired result.
Notes and References
Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: DESIGN
Version: V12.0.2
Function: SKETCHER
Ref: 001-7967243