Open latest v18 version (and update) and see if it's fixed. 

samuelbb

Valiant effort.

Were there any updates to both bugs below? Still present on V17 upd6.

3.2 bug also happens on WinCC RT Professional generating "unknown objects".

• 3.2 Broken HMI build system
  WONTFIX / CAN'T REPRODUCE - probably didn't even make it to the devs.
• 3.1. cut & paste (including drag & drop network reordering) in the LAD editor deleting written-in constant
  TIA 15 no longer supported (even thou they introduced the bug in the update). No comment :(

 

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Split from TIA Portal bugs / Usability issues - will they ever fix this?.