I'd like to remind everyone to please be careful when entering IDs and links to the site.
I have just found 185(!) MU links which will have to be redone because they had a space in them when they where entered in the MU link field.
What I mean by this is that instead of simply putting "1" into the field, " 1" was put in there, this generates this link: "https://www.mangaupdates.com/series.html?id= 1", note the space between = and 1, this leads to the MU ID disappearing when someone edits the manga again.
This of course also applies to MAL IDs but I haven't analyzed those extensively to see how many broken links there are.
The system attempts to fix some of these issues itself to some extent but again, please be careful when adding the IDs to manga.
And while not as many as the above, I have also noticed people putting the entire URL (i.e.
https://www.mangaupdates.com/series.html?id=1 ) into the MU field, please don't do this as the same happens (ID disappears when someone edits again).
That and please put the right link under the right label, I have also seen CDJapan links in the MU field (I imagine someone forgot to change the label to CDJapan), this also erases the MU link.
Sorry for the lengthy post but I'd like to make everyone aware of these things so they don't happen as often. Keep up contributing.
EDIT: Oh... the situation is actually a lot worse, I see at least 600 IDs broken because of spaces at the end (rather than the start like I mentioned above), again, please be extra careful about this. I'll attempt to get these fixed in the meantime.