Usage of ActiveX in Libre Office

We are recently switched from AOO to LO. In the release notes a possible 
removal of ActiveX is announced.
You are asking for information about the use case so here we are:

We are using in our company a selfmade ERP system which is grown for 
more than 15 years now. For historical reasons the system is written in 
Delphi. At the beginning MS Office was used as "office frontend", since 
about 10 years OOo/AOO/LO. The main workflow is using calc for business 
calculation and writer as a kind of report tool. Most information from 
the main database is delivered via ActiveX to calc. After working in 
calc the information are read back and used to create documents in 
writer. The complete project and document management (and many more) is 
done by our ERP.

I know there are others and probably more elegant ways and about once a 
year we are discussing to change that and finding the "big solution" - 
but this is a huge and expensive project.

Removing ActiveX from LO will be a showstopper and nail us to the last 
supported release - or bring us back to AOO, who knows.

Best regards
Joergen Pisarz