January 15 Deployment - Expected Behavior re Favorites

Deleted Fawkes, could you ask one of the techs what behavior we can expect regarding Favorites import during the cutover from EdgeLegacy to EdgeChromium, and then let us know?

The reason I ask is that a number of us who were testing EdgeEnterpriseStable (Version 79.0.309.56) last week ran into a problem because EdgeEnterpriseStable (see "Deployment - Fonts, Favorites, Sync" and read down the comments) seemed to endlessly duplicate Favorites as EdgeEnterpriseStable was installed on a number of computers tied to the same MSA (that is, EdgeLegacy Favorites installed in EdgeChromium on the first computer, then again on the second computer (creating duplicate Favorites) and again on the third computer (creating triplicate Favorites).

I spent some time testing the newest EdgeChromiumBeta (Version 79.0.309.58) yesterday, and I noticed a change in behavior -- that is, when EdgeChromiumBeta (Version 79.0.309.58) was installed on Computer 1, Favorites were imported from EdgeLegacy, but that when EdgeChromiumBeta (Version 79.0.309.58) was installed on Computer 2 (and subsequent computers), the Favorites either (a) were not imported from EdgeLegacy or (b) the duplicates were caught during the process of installation and eliminated, so that the Favorites that were set up during installation on Computer 1 remained constant, with no duplication.

So this is my question, looking forward to the January cut over, using my husband's computers as a concrete example:

My husband has two computers, and his computers will be the test bed for me to prepare 17 other computers for the cut over (right now, I have them all blocked, and will release the block only after I understand what to expect).  Both of my husband's computers run EdgeLegacy, synced through his MSA.  My husband has not participated in the MEI program and has never installed an EdgeChromium build on any of his computers, so he does not have Chromium-side Favorites linked to his MSA; his Chromium-side slate is blank at this point. 

Based on my experimenting with EdgeChromiumBeta (Version 79.0.309.58), this is what I expect to happen when my husband's computers are cut over:

(1)  Computer 1 will cut over from EdgeLegacy to EdgeChromium.  EdgeLegacy will be hidden from menus and other access.  Favorites will be brought over from EdgeLegacy and an EdgeChromium Favorites set will be created on the Chromium-side server, linked to his MSA.

(2)  When Computer 2 cuts over from EdgeLegacy to EdgeChromium, EdgeLegacy Favorites from Computer 2 will not be added to the EdgeChromium Favorites already linked to my husband's MSA, and no duplicate entries will be created in the Chromium-side Favorites set linked to his MSA.

Is that (non-additive, no duplicates) the expected behavior?  Or is the expected behavior that each instance of cut over from EdgeLegacy to EdgeChromium will add an additional set of Favorites to the Chromium-side Favorites set, creating duplicate (or more) sets of Favorites as we experienced with EdgeEnterpriseStable (Version 79.0.309.56)?

I think that the answer to this question will be helpful to any of us who have, or are responsible for maintaining, multiple computers linked to the same MSA.