Dear Manglesh
you "misunterstood" a little bit how a "property tree" is defined. A property tree is a list of value asignments as defined. Some of these are only for internal uses (e.g. the nodes); some of them can be used to maintain data e.g. by using a reference to a class. So if you would liketo get updated in the llok and feel of property tree you need to make anupdate for the value assignment types in customizing. Juts use the "Names""/"Description" as defined on class level and reuse them in corresponidng customizing activity.
Regarding your second topic: answer is: yes: just remove the value assignment from protperty tree. Keep in mind these "issues": if in the past there are data maintainted in the value assignment type as removed from the tree you need to remember that: thee are still change docs availaeble; and data is there, and may be tjis value assignment type has been used in rule sets and WWI templates: therefopre best option is to do like SAP is doing: just move this value assihgnment from property tree "STANDARD" (whiich is used normally) to property tree "OBSOLETE" which might be helpful. So if needed user can switch to property tree "OBSOLETE" and checkl the data; but value assignemnt type would be "hidded" as in most cases the user will use "STANDARD" tree
C.B.