How to find and replace within selected text (RH2015)

Hi all,

This seems pretty simple but I can't figure it out. I need to do similar things frequently.

I want to find the string": " and replace with nothing (ie remove it) within the text I have selected in the currently displayed topic. I can't seem to find a way to do this in RH 2015.

I enter : (that is colon followed by space) in the Find field and leave the Replace field empty.

1. If I do "Replace all" it works, but includes all the text, no just what is selected, and I end up replacing some items I do not want to touch.

2. If I do "Find Next" to find each instance and then click Replace, the string is not replaced- it just moves to the next instance.

What am I missing?

Jeanne