why can’t I edit label document generated from mail-merge database?
This is a legit question and even has an interested person working on a solution. I have the same problem and this is relevant
Let’s try again to solve your problem. I assume you have successfully created the page of formatted labels (all the same format but no names from your database). Then the next step is to merge this formatted page of labels with your database by doing the following:
- View > Data Sources > locate the database to be used > select the records to be used (or use a filter).
- File > Print > “Do you want to print a form letter?” Yes > Output – File > OK > name the file and select your desired location for storing it > Save.
- Now you need to open the newly created file (an ODT file) – and then make any changes you desire to the individual labels.
Maybe this will be a more complete answer?!?
@Claud9 – Did @iowalady answer your question? Please let us know so we may mark this question as correct 
The secret is to check “Synchronize contents” in the Format tab of the Labels dialog box. (File > New > Labels > Format tab > Synchronize Contents.) Then changes need to be made to the top left label – and then click the floating Synchronize Contents Toolbar. This causes all the other labels to be changed.
Additional helps on labels are available at –
http://help.libreoffice.org/Common/Creating_and_Printing_Labels_and_Business_Cards
Hope this helps!
Thanks; I don’t think I phrased my question specifically enough, though. I did in fact check “Synchronize contents” - and the edits I want to make are to individual records, not globally. I recreated the database and re-defined my prototype labels. Still cannot edit; in read-only mode.