How restart downloading when a podcast is failed or canceled

[Ligerien]

Hello,
How restart downloading when a podcast download is failed or was canceled (when computer down)

The only options with right clic are :
Remove from the list
and
Select All
It is not a option like : Restart Podcast Download

I cannot retrieve the orginal URL to download again this podcast ?

How find the orginal URL to download again the MP3 podcast ?

I have currently a large number of old podcasts (200) present in my podcast download list (failed r canceled) and cannot serach again in the original subscription because only the recent podcast will be displayed

Thanks for your help

Philippe