Migrating Data from L-Soft Listserv to wpFORO
There is no .IND000(x) file format for databases. This is a custom format. please try to export it as CSV, XML, SQL , MDB or BAK format. These are the formats you may convert to wpForo.
In case you want to say thank you !)
We'd really appreciate and be thankful if you leave a good review on plugin page. This is the best way to say thank you to this project and support team.