A slight correction; ARC250 has a tool to import frequencies; you must copy/paste to get the rest.
Yes, it's not fun; and it's really hard to correctly import a text file, since there's no telling how the data is presented or in what order. To that end, there are a couple of other packages that have a better setup for this;
a. If audio recording is not an issue, then Scan Control is your best bet. In fact, if you are importing data from an older Uniden scanner or a PRO2052, Scan Control will upgrade the data automatically, so no text file conversions are needed. But it does have a very powerful text import tool that can import just about all the data you need, including alpha tags
b. I know Trunkstar 785 has a CSV import tool, but I haven't used that program, so I can't say how it works. This program has its own recording module, but it kinda has what I think of as a fatal flaw; you can't play back recordings made with Trunkstar with a standard .wav player. This is because a date/time stamp, along with some other info, in encoded into the file itself.
c. Radio Manager 2004 can import text files as well, but it's very finicky as to what happens if it finds a character it doesn't recognize; the import shuts down early. To do recording you need to purchase RecAll Pro seperately.
d. Scancat has it's own seperately purchased import tool called Magic.
Just a few possibilities here....73s Mike