Some SNVT's are not updating correctly.
LON Bindings are not correctly configured as a "Sigma" connection type.
The IC-LON configuration process is explained fully in the "IC-Lon Configuration document attached HERE.
Part of the above document deals with the use of the IC-Lon Plug-in. This Plug-in will create the "Sigma" connection type which is used by the IC-Lon. Below is a screen shot of this connection type.
This connection type is selected "Unackd", the advanced settings are shown below.
If the correct connection type is not used, then the bindings will not operate correctly.