I found out what to do.
I needed to:
- download the up to date PocketMoney version to my MAC,
- import the PocketMoney.db file from my older PocketMoney version that still runs on my iPhone into PocketMoney on the MAC,
- then the PocketMoney.cdb with the new data structure is created.
- treat this ...

11) Navicat -> Tools -> Data Synchronization
12) Source connection PocketMoney .cdb Database main
13) Target connection iCompta .cdb Database main
14) Next
15) Next
16) Deploy
17) Execute

When I do above steps in Navicat, there is an option to tie data fields (or tables from PocketMoney (Source ...