You can copy a structure you wish to paste into Database Manager, from anywhere in the program. To paste a structure into Database Manager, use the Paste Structure button in the top right corner. The Copy and Paste buttons on the button bar are intended for records, not for single structures.

To paste a structure to a record:

1. Activate the record you want to paste the structure into.
   
   
2. If processing tree, select node you want to paste the structure into.
   
   
3. Paste the structure by clicking the Paste Structure button.

If a structure has been added to a record or an existing structure has been replaced, the word ”Updated” will appear at the bottom of the structure pane. If anything is changed in the record, including the structure, a small circle is displayed in the ID Num. column in the spreadsheet. After a structure is added or changed, the molecular formula and molecular mass will be automatically calculated and updated.

If a structure has been added to a tree node or an existing structure has been replaced, the Restore Precursor m/z button  at the bottom of the structure pane becomes active, if the structure molecular mass differs from the existing precursor m/z value. Using this button, the precursor m/z value of the active product spectrum can be set according to the molecular mass of the drawn structure.