Quattro Pro Excel Compatibility Issues

Quattro Pro has many compatibility issues with XLSX. For example, when I save a QP file as XLSX to share with a client, the issues range from simple like row/column sizes and borders not exporting perfectly, and basic functions like VLOOKUP do not export at all.I would like a process set up where Quattro Pro users can e-mail a team at Corel example spreadsheets as they notice the compatibility issues.