This is some thing related to sheet metal parts and SolidWorks add them to the list even if you delete it. So simply leave it there.
Check this discussion: https://forum.solidworks.com/message/276342#276342
Thanks for the link, but my main question is why did SW delete all the others? And is there any way I can get them back?
Thanks for the link and the file. For some reason SW doesn't seem to be recognizing the list. I put it in the location that I show at Options > System Options > File Locations > Custom Property Files, but when I went opened a SolidWorks file, went to File > Custom Properties, and clicked the drop-down, it still just showed just PunchID and a couple that I had added there instead of the list you sent.
Anyway, I clicked on the "Edit List" box there, opened the .txt file that you sent, and copied and pasted the ones that I want. I don't know what's going on with it, but I don't think it's worth spending any more time on.
Thanks again for your help,
Interesting... We streamlined our list some time ago. Never had PunchID in it.
I just took a look. Yep, it's there. SW must have added it in at some point. It was at the bottom of the list with an extra cariage return between it and the previous items.
I tried deleting it with the built-in SW Properties/Edit List/delete functionality. It disappeared, but came back after a restart of SW.
Next I deleted it using Notepad and editing the text file directly from Windows. After restarting SW, PunchID was still gone. After opening a new part file, PunchID was still gone. After opening Properties, PunchID reappeared. Seems it might be in my template???
PunchID is not one of the custom properties I have pre-populated in my template. What is more, our properties.txt file is on a network share. So does this mean that every time someone in the office opens their file properties dialog, SW is taking the time to go to our network and overwrite that txt file?
I have no idea if this is related, but I have downloaded and ran Anna's Punch benchmark file in the past.
We are using SW2012 with SP5.