1

In PL7 clear the code for your protected DFBs.

2

Unprotect your DFBs.

3

Send your customers the unprotected DFBs (without the code) and ask them to replace the protected DFBs in their PL7 applications by these unprotected DFBs.

4

Ask your customers to convert their applications from PL7 to Control Expert.

5

Convert your DFBs (with the code) and protect them.

6

Send them to your customers.

7

Ask your customers to update the unprotected DFBs with the protected DFBs containing the code.