Office JS Add-In Excel: NamedItem losts it's reference and returns =#REF!$[Location]

My Set-up: MacOs, Excel Desktop

Problem: when loading a template file via insertWorksheetsFromBase64 to insert new workbook the formula (Formula > Name Manager) losts it's reference from the source workbook. Instead, it returns =#REF!$[Location] in the formula.

For example: in the template file, i named the B2 cell to qxInput (picture below). After copying the source workbook to the current workbook, the sheet reference was not found. If I then load another workbook, the namedItem is still visible.

Question:

1. Is there any solution to load the workbook with the namedItem correctly without losing it's reference.
2. The namedItem should only be accessible on that current workbook. After copying a new workbook in the current workbook, the old namedItem from old workbook should not be loaded/visible

It works fine on Excel Browser

Fotos:

• Formula > Name Manager on template file: picture 1
• 
• Formula > Name Manager on loaded sheet in current workbook: picture 2