Since the statistics software PHPWebStat works very well, I bought the extra plugin package after having purchased the package (1.0 or 2.0? and upgraded to v4.5) many years ago and downloaded to the current free version number 20. I kept my old mysql DB and it seems to be compatible.

Question: From PHPWebStat version number 4.5 to the Free version 20 are there any incompatibilities in the mysql database?

It seems not to me, everything seems to work but I ask for confirmation.