Created Unassigned: protect sheet grayed out for the worksheets copied from other workbook [13453]

hi

I have a workbook with some of worksheets copied from the other workbooks, but the issue is when right click the tab of some sheets, the protect sheet option is grayed out, those sheets((with formula)) may be more complex than other simple sheets(just data), after I activated a simple sheet, then the protect sheet option is available for all sheets , it seems the CopyTo doesn't work properly.

I want to try the version 1.2.5, but I don't know how to copy the worksheet from the other workbook, there is no such functionality such as CopyTo, CopySheets, If anyone knows a way, please let me know

Thanks,
Solo