A workaround is to use custom properties that you can easily "Go To" (no need to wade through slides).
From http://msdn.itags.org/powerpoint/4426/ :
- Select shape or text that you want to set a bookmark to.
- Select File | Properties... and activate the Custom tab.
- Type a name for the bookmark.
- Tick 'Link to content'. The value that is listed in the adjacent dropdown box when you tick 'Link to content' is a reference to your selection.
- Click Add.
- Click OK to close the Properties dialog.
Now that you have created a bookmark, you can jump to it as follows:
1. Select Edit | Goto Property...
2. Click the Property name from the dialog (this is the name you gave to the bookmark).
3. Click on Go to.
The "Go To" dialog presents you a list of bookmarks you can double-click, and goes to your favorite textboxes, ready to be edited / pasted to.