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
However, you might get this:
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