Job Templates should not overwrite Node Properties

Current Situation

A job template T1 defines the argument V1=value1
A job J1 refers to T1
J1 defines the node property P1=Vp1
J1 defines the node property V1=VV1
J1 defines the variable V2=value2
J1 defines the variable V1=newValueOfV1

When now changing the script of T1 and executing the "Update Jobs" action.

• All node properties that have a name that is not the name of an argument in the job template are removed in J1
  • P1 is removed
• All custom environment variables are removed from the job
  • V2 is removed
• All environment variables do have the value of the environment variables stored in the job template.
  • V1 have the value1

Desired Behavior

When changing the script of T1 and executing the "Update Jobs" action.

• The list of Node Properties in J1 should not be changed. P1 should not be removed.
• It should not be possible to change the values for environment variables in the job that are defined by the job template.