Unable to set alias.conf for (some) RAI HD channels

[Alexwilmac]

I've been using CrossEPG for many years and I've always been able to set alias.conf for the cases I need, specifically to copy EPG from SD to HD channels.
The examples at the beginning of alias.conf are simple and easy to follow.
But, lately, I can't get to my goal: copy the EPG from some channels, for instance some RAI channels (but only some, the ones I'll tell later) to the correspondent HD.
This issue affects, among the others: Rai Movie, Rai Premium, Rai News 24 and other ones, but not RAI1, Rai2, Rai3 and others, for whom my alias.conf woks perfectly.
Note that, I want to copy the EPG of the satellite version of the 3 channels above, which is the most complete one, usually about 5 days.
It should be done very easily either by this line
Rai Movie-RAI=Rai Movie HD
or, to be even more sure, by this
2136-3070-013e=Rai Movie HD
or, also,
2136-3070-013e=4536-30D4-013e

just to talk about Rai Movie. Same issue for the others already mentioned.
But there is nothing to do: it just does not work.
Where do I fail? What puzzles me is that this scheme perfectly works for many other channels.

Thanks for any suggestion.

[Alexwilmac]

P.S.
What is really strange is that alias works well with channels but the ones from 13E, 10992V. For instance, about Rai Movie, crossepg log reports

05/01/2020 23:57:45 Source channel "2136-3070-013e" with SID "2136:xxxxxxxx:3070:013e:x:x" has not entry in epgdb, skip it

but its EPG exists and it's the longest one among all the other channels with the same name.
Why it is not found in epgdb?
I tried the same alias.conf either under OBH or under BH (last updates, of course) but the log is the same. I tend to think, then, that it's something related to some plugin's routine.
The same happens to all other RAI channels from the same transponder (Rai Premium, Rai News 24, Rai4 and some other ones.

I'd really appreciate any support about this issue.