TextJoin keeps adding double quotation marks - How do I make it stop?

Barclay0x00  depending on the "other" application you might have options there to keep source formatting or merge formatting, etc...  But if you want to have tabs added, you might be better off just having the text in consecutive columns and then copy the row and paste it.  Or in your example, no text join necessary, just select B3:D3 and copy and paste (if pasting into word, select paste text only)