Cannot filter out-of-scope strings to QA Transifex project

Hi! We are trying to run a QA on Transifex projects. We followed these instructions, but, even if we copy the Transifex URL after having filtered out the out-of-scope strings, the full content is analyzed, thus resulting in very long Xbench reports. We also tried exporting the .csv file including in-scope strings only, but the exported file has corrupted characters, thus not enabling the proper QA of the translation (in .xls or .txt). Has anyone faced this problem and found a solution? Thanks!