I currently have over 400 Museum Ships on my site site, and every page has a map inserted to show its location. I use the Map ID to keep track of the total number. So in below exmaple I added the Sarinda-ML1392 as the last ship, and that page show her location via Map ID 404

Recently I made some mistakes and deleted the last map several times. As a result, when I add the next ship, the O'Brien, the software gives it the sequential 405 ordering number as in the next screenshot:

But in the Maps list it receives the Map ID 408, as I previously deleted maps 405, 406 and 407, see next screenshot:

The database also jumps from 404 to 408, shown by the following picture:

So I edited the database, and everything looks good:

Even in the Map list everything now shows ok, and the last Map ID is now 405 as it should be, but when I add another ship it jumps from 405 to 409 and I have to edit the databse again.
Is there a way I can fix this permanently?
Thanks so much!
Pim