After moving a grounded (or the base part in an assembly) with the Move Component command in assembly, either have to replace the deleted relationships or unsuppress the relationships and this creates extra work.
Solution
Consider using Drag Component to move a grounded part in assembly and have other parts follow. If you use Move Component you'll have to decide whether you want to Delete or Suppress the relationships, likely to suppress. After completion you'll have to unsuppress all the relationships, making Drag Component more applicable.
Notes and References
Hardware/Software Configuration
Platform: INTL64
OS: window
OS Version: 764SP1
Product: SOLID_EDGE
Application: ASSEMBLY
Version: V219.0
Function: RELATIONS
Ref: 001-9509874