Porting live effects - problems with dfferent plugin file names.

I've been working on embedding an Illustrator Live-Effect plugin  to a new Illustrator CS5 plugin.

One of the live-effects alters the text of text objects to use standardized abbreviations for place labels in maps.

The situation is:

I have ported the plugin using the exact same LiveEffect name and the same parameter names to the live effect dictionary of the art.

This in the hope that when I open the illustrator file in CS5 the effect will continue to work on converted text art.

But when I open an Illustrator 10 file in Illustrator CS5, the text object comes up with an "<Unknown>" live effect entry in the Appearance panel. And as the text is converted from legacy text to new ATE-text, the result of the live effect is also gone.

Studying the contents of the illustrator files, I find the following in the Illustrator 10 file

/BasicFilter :

(Abbreviate Text Labels...) 1 0 /Filter ,

(VisualMap Effects) /PluginFileName ,

(Abbreviate Text Labels...) /Title ,

/Dictionary : /NotRecorded ,

4 /Int (vmAbbrType) ,

0 /Bool (vmAbbrIntls) ,

0 /Bool (vmPreSufx) ,

0 /Bool (vmSufxInFront) ,

/String (vmAbbStr) ,

; /Dict ;

While studying an Illustrator CS5 file, I find:

/BasicFilter :

(Abbreviate Text...) 1 0 /Filter ,

1 /Visible ,

(VmCartographer3.aip) /PluginFileName ,

(Abbreviate Text...) /Title ,

/Dictionary : /NotRecorded ,

0 /Bool (vmPreSufx) ,

0 /Bool (vmAbbrIntls) ,

4 /Int (vmAbbrType) ,

0 /Bool (vmSufxInFront) ,

/String (vmAbbStr) ,

; /Dict ;

So obviously, it isn't working because the name of the plugin file is different (or is it another reason?)

It's a bit tricky because  I have now combined several filters and live effects from several earlier plugins into a single new plugin.

Is there a way to overcome this problem?

It is easy to receive a notification upon opening a document and check if it's an earlier version of Illustrator.

But how do I go about tracing the art tree to "upgrade" these live effects to the current plugin?

Or is it a better way?

Agnar