Hi Niekveltman
We experienced similar issues, our issue was that we couldn't spy the ""save as"" dialogue box properly, but you seem to have solved that part.
But nevertheless we chose instead to open the excel file and save it via the ""Save current workbook as"" in the ""MS Excel VBO"". If you choose this approach, make sure that you have an action that calls the ""MS Excel VBO"" action ""launch"" before pressing the open excel file in the browser and then call the ""MS Excel VBO"" action ""attach"" after pressing the open excel file in the browser - otherwise you cannot properly connect to and attach to the excel file, especially if you want to alter the excel file.
BR,
Mustafa