Data Merge file format?
Okay, so I decided to do a little experimenting with data merge, since I don't remember the last time I used the ID version.
I have just spent an hour trying to craft a data file that Data Merge will recognize, and despite all efforts, using Excel to create a sample sequence file and typing in a few simple ones in Notepad++, and trying both .csv (with comma separators) and .txt (using tabs)... I get the "source file you have selected either has no records or is not a supported format" error.
I've done CSV etc. data work. I understand the format and delimiters and so forth. I am checking everying I can think of. Why would ID (19.4, Win11) refuse to see any of these files as valid data?
