Very often I use formulas looking like =SUMIF($Tabelle1.$AH$242:$AH$389;$B86;$Tabelle1.$M$242:$M\$389) I use many spreadsheet documents all with the same sheet structure, and when I have improved the usability of the area with such a formula I would like to use this improvement in other documents with the same structure. Unfortunately when I copy/paste the cells (or import the complete improved sheets) the formula changes to something like "=SUMMEWENN('file:///C:/Users/Public/....." referring to the source document.