The thinking is with regard to the following situations:
1) A longtime Appleworks spreadsheet and database user sees the new Dialog Box that comes up from the App Store update and offers him a "free" upgrade to Mavericks with the only option "Details." Having reviewed the Details, this user upgrades and to their horror discovers that they can no longer access their Appleworks spreadsheets nor databases in Mavericks.
2) Another longtime Applewoks user's Mac fails and they purchase a new Mac that can only run Mavericks, migrate their data over to this new Mac and to their horror discover that they can similarly no longer access their Appleworks files.
Their only option, at least in the database situation, is to open the database file in Appleworks to EXPORT the data for IMPORT into another database, such as Filemaker.
For the first example, their solutions are:
a) Revert to Snow Leopard
b) Revert to Snow Leopard and install Mavericks in a new partition or external drive and "dual-boot"
c) Run Appleworks in Snow Leopard Server installed in virtualization, such as Parallels
For the second example, their only solution is c)
So if there is a new plug-in/stand-alone module for LibreOffice that can accomplish the desired result, it would be helpful to know that so as to add it to the list of solutions.
So when you say:
Concerning the spreadsheet's and the database's conversion, it only tries to retrieve the cells/reports' content(**) and formatting of the main spreadsheet/database.
Will this conversion provide satisfaction in these situations?