[UI] Search aliases lose configuration when editing

I create an index alias as follows (with several existing Search Indexes):

"+Add Alias" button

I name the new alias "mytestalias" and add three indexes (note the highlight in the select box).

Not only is the sleect box multi-model but the items occur in the JSON representation to the right.

At this point I hit "Create Index Alias"

Now the main Search screen will show the new alias (there is only one)

Next Edit the new Alias click on the "Edit" button

The JSON representation is correct but the selectable (multi-list) is not highlighted.

I beleive this next issue might be due to the lack of highlighting above for "hotel_name" and "perf_fts_index-1"  but if I click on say "perf_fts_index-1" the "hotel_name" (which we didn't select) will be removed from JSON definition