Details
After uniting the promote bodies, the assembly constraints get suppressed and the body shifts, whereas if the same done for wave geometry linker the assembly constraints does not get suppressed.
Solution
Two different pieces of functionality are behaving differently. That is allowed.
Hardware/Software Configuration
Platform: INTL64
OS: window
OS Version: 1064
Product: NX
Application: ASSEMBLIES
Version: V11.0.2
Function: POSITIONING
Ref: 001-8996067