Ah, sorry, I guess I didn't know what you actually meant. If it's the same problem as mrtinkles, then I'll tell you what I told him. As long as by "IMDB series overview" you mean the main root series ID, right?
So for the first link above you gave me, the link for that is: https://www.imdb.com/title/tt4008500/
And that's what you refer to as: "IMDB series overview"?
Okay, if you come across that again for a series that doesn't have a page full of empty episode slots or individual episode numbers, then use the main root IMDb series ID URL when uploading multiple subtitles for that series.
rather than the individual episode URL. Individual episode ID's can be used once the series page exists and you haven't got multiple uploads to upload.
For that to work, the .srt files should be named as: Magic-Kaito1412-S01E01 format. Notice the S01E01 as opposed to S01-E01. Sometimes even the latter naming format may work, but best not to risk it.
Do the following:
1: Have all subtitles named correctly with their release name, if you have the release name.
2: Fill in all data on the upload page and select hearing impaired tab (HI) if they are HI subs and choose correct FPS.
3: In the IMDb ID box, fill the main series URL: https://www.imdb.com/title/tt4008500/
4: Click "Browse" and select all the subtitles from your folder for that season. Normally 20-30 max at a time.
5: Click on upload.
This may take some time, but the site will split the episodes itself to individual episode slots and assign the individual episode ID's to them automatically. In the end it will either say thank you for your upload or give you a 503-500 error message. That's okay.
Click back on your browser, remove the HI tab from the upload page and select all none HI subtitles now and do the same thing as before.
This will save you a lot of time as opposed to uploading them individually. Bare in mind, the above automatic split and parse (split and assign individual episode IMDb ID) will only work if that series had individual episode IMDb ID's available to begin with. After uploading, check to see if it was done correctly. If any episodes weren't given the individual ID, then just edit them and assign it manually. It's very rare that this method wouldn't work for you.
I checked your subtitles for that series above, and you've been spending way too much time uploading them individually. Thank you, though.
Following the above method should also save you a lot of time during upload.
Recap: Only use individual episode ID's when a main series page exists on the site or you have only one or two subtitles to upload. For multiple subs, upload them altogether.
If you use the above method and it still doesn't show properly, contact an admin and ask them to use the "IMDb Update" feature and that should fix any missing episodes after the upload that don't show in the episode list.
Hope that helps and answers your questions.