It's seems they are a problem when you want to delete a schematic. I explain, i would like to edit 'starshine surprise' schematic and i realized that the schematic was already created with an id of 411. So, i updated 'resources' to nothing (blank), 'components' to nothing (blank) and finaly 'Skill Needed' to nothing (blank). So, after the erase of 'Skill Needed', the schematic completely disappeared form swgcraft website as a delete but when you download the file 'schem.xml', you could verify that the 'starshine surprise' is always there with an id of 411 (good) and an id of 1691 (WRONG). So i guess that the schematic is always in your database and i think there are a problem when you try to put to blank a schematic. There another schematic called 'DELETE ME' always in the database with id 1688 but not displayed in the website.
I hope to be understood well
If you could verify by your self 
Thank you
