Remove an unused map ID - Does Not Work, Documentation Innacurate

Question

I am using TCS 3.5 on Windows XP Pro. We're linking FM books to RH for online help output. I'm listing this in the FM Integration section for that reason, but this seems like it could possibly be a standalone RH problem, too.
I've been creating map files in RH and everything was going well until I tried cleaning out the unused map IDs. The topic alias markers I create in FM work well and do port over. However, if I edit the marker in FM and update the linked files in RH, the new marker shows up in the map file -- but so do all of the old ones.
I thought that wouldn't be a problem when I found the "Remove an unused Map ID" function under the "Project Set-Up/Map Files." It seemed like it magically worked once and now not at all.
I have tried every variation you can imagine with the process. I both edited and deleted the markers in FM, but I still cannot clean them out with this function. I also found that the map file must be "unlocked" and verified that in the properties setting, as well.
Part of what I find strange is that the documentation for this function does not match up with I see in RH9. Maybe this is documentation for an older version of RH (see below)
At any rate, this is a huge problem, because I cannot have the map files littered with unusued map IDs, nor is it realistic to do this work manually, especially given the size of our books.
Remove an unused map ID
Your map files must be unlocked to use this option. To remove unused map IDs:
Expand the Context-Sensitive Help folder in the Project Set-up pod. 
Right-click the Map Files folder. 
Select Edit.
Do the following:
Map Files
Select the map files from which to remove unused map IDs.
Select All
Click to remove unused map IDs from all map files.
Clear All
Click to deselect all map files and not remove unused map IDs

Answer 1

Alright, maybe it isn't that bad if you substitute the correct text we discovered. But I think this also reveals another shortcoming with the management of those map files, which is once you open the "Edit Map IDs" dialogue box, you should be able to batch manage the entries in the same way. Ultimately, the "Remove Unused IDs should just work, but being able to select all the Map ID entries and delete them would be an acceptable workaround and/or a nice piece of enhanced functionality.
When I tried deleting the Notepad entries, I left RH open. But I just now tried the method you suggested, closing it out and opening it again. This actually did not work and caused more problems. From that point, every time I tried to force an update, it would only pull over a single topic alias and nothing I did would restore the other original topic aliases from the FM files. This method seems to cause the integration to wig out.
From there, I had to painfully create a new project and re-link the FM files, apply .isf settings, etc. That worked, but who wants to do that every time, not to mention the versioning management nightmare it will create, especially in an environment with multiple writers.
After I got the files linked again, I determined that the best method seems to be deleting all the Map ID entries manually. That seems to clear out the Notepad file correctly and not cause any confusion for RH.
I can understand why you opted for being a "FM import guy." This linking of FM>RH is fraught with lots of headaches and oftentimes application bugginess. In this case, I think I'm adhering to the philosophy of doing all the work in FM, but since the "Remove Unused IDs" functionality doesn't work in RH, there is little to do but touch things in RH with a workaround.