1038066 - No precedence control for settings in new sync (sync 1.5)

Status: RESOLVED DUPLICATE of bug 966530

(Firefox :: Sync, defect)

Description

[Phil Tooley]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0 (Beta/Release)
Build ID: 20140605174243

Steps to reproduce:

New sync version does not seem to correctly handle precedence for customised settings.

Example:

1. Delete %appdata%/mozilla on both machines.
2. Open ff on laptop, set up new sync account
3. In about:config set browser.newtab.url="about:blank"
4. Set services.sync.prefs.sync.browser.newtab.url=true
5. Sync now to be sure settings uploaded

6. Open ff on desktop
7. Log in to sync account.

Back with the old sync I was always able to do a full overwrite and this never happened, but now some strange mangling together of the settings is occurring.

Can the old feature be re-added to allow complete overwrite of local data with server settings? Otherwise adding a new browser to an existing set of set up browsers will play havoc with customisations.



Actual results:

settings on desktop become:
        services.sync.prefs.sync.browser.newtab.url=true
        browser.newtab.url="about:newtab"

settings on laptop reset to:
        browser.newtab.url="about:newtab"


Expected results:

settings on desktop become:
        services.sync.prefs.sync.browser.newtab.url=true
        browser.newtab.url="about:blank"

settings on laptop unchanged