Can't insert soft returns in Calc memo fields via find and replace

I have a lot of taxonomic data I am trying to migrate to LibreOffice Base on a new machine running Windows 11. I am moving the data from its former home in .dbf and dbt. files created by Lotus Approach, an element of the so-called Lotus SmartSuite for PC, now more or less extinct

my routine is to open the .dbf files as spreadsheets in Calc, select all the data, copy it, and paste it into a new Base (.odb) file

a lot of the data is in long text fields–field type memo–organized as lists with each line starting with a double hyphen

during the import all the lines are jammed together. losing the line breaks that organized the text

it occurred to me I could re-insert the breaks using the Find and Replace dialog, entering the double hyphens under Find and adding the soft return code “\n” in front of the double hyphens in the Replace box

however, all this does is to add many instances of the characters “/n” instead of the actual returns I’m seeking to insert

btw, it doesn’t seem to matter whether or not I check the “regular expressions” box in the dialog

by selecting and clicking in the appropriate cell I can easily add the returns one at a time by pressing shift plus enter in front of each hyphen pair, but this is not going to be practical for the hundreds of records I’m importing

am hoping there is another way

Attention to this bug: 117436 – Export to Calc and import from Calc: Line break isn't exported through copy and paste

Did you try to connect to dBase-files directly by Base? Seems it will work for you, because the files end with lower cased characters. See 46180 – FILEOPEN - LO Base fails to connect to "*.DBF" files but connects OK to "*.dbf"

Thanks for quick response!
I see I’m not the first to scratch head on this issue
re: your second point, have been trying to open .dbf files in Base proper and having some success, but formatting is still in issue
attached screen shot illustrates that even when the double hypens correctly start lines of text, some retain odd rectangle character at end, and when I find and remove all instances of such using Find and Replace, some lines still break in middle, perhaps because of a non-printing character?
my aim is not to become a database maven but to make these files usable again for my purposes

I think that if you upload the problematic file in .ods format, it will be possible to write a macro for the required processing of cells.

thanks it will be my first