In this thread Maïeul explains how footnoterules work in Reledmac. in the provided example there are two "standard" (namely not critical) footnotes series. Each of them can have a footnoterule, so that in a default edition we would have:
Text
\footnoteruleA
[Familiar Footenotes series A]
\footnoteruleB
[Familiar Footenotes series B]
Now, let's imagine that we want just one footnote rule separating the text from all the apparatus (regardless how many / what kind of footnotes we have in that particular page), and we can do that simply putting in our preamble:
\let\footnoteruleB=\relax
Now comes the problem. It might happen that in one or few pages we have footnotesB and no footnotesA. As a result Reledmac will print NO footnote rule at all.
So the question is: is it possible to bypass Reledmac using just the standard LaTeX \footnoterule making it appear regardless what kind of Reledmac series is present?