I use a GR1000 logger. This was produced in Austria and the UK agent is Dave Robertson of TaskNav fame. The logger has a built in BGA TP database and in my case this is 1998 vintage and getting increasingly out of date. The logger also has a user loadable database for up to 200 TPs. The supplied software (data-prt.exe) will load this database and can import the TPs in various formats. I found that the Filser LX5000 DA4 format worked for me. The process I used is to run TpSelect to choose a subset of 200 or fewer BGA TPs around the Shobdon area, create a DA4 format file, then import this file to data-prt.exe and write them to the GR1000 logger. That's simple to explain here but took me all morning to figure out.
If you have more than 200 TPs in the file, data-prt.exe ignores them but doesn't give you any warning message.