When you copy and paste cells containing date values between different spreadsheets, both spreadsheet documents must be set to the same date base. If date bases differ, the displayed date values will change!
Indicates where the current sheet is to be moved or copied to. Select - new document - if you want to create a new location for the sheet to be moved or copied.
The current sheet is moved or copied in front of the selected sheet. The - move to end position - option places the current sheet at the end.
Specifies that the sheet is to be copied. If the option is unmarked, the sheet is moved. Moving sheets is the default.