update headings in fpd

dev-docs/bidders/ix.md

@@ -356,7 +356,11 @@ gulp build --modules=bidderModules.json
 
 ## Setting First Party Data (FPD)
 
-As of Prebid.js 4.30, use the more generic ortb2 interface, which can be used for more than just First Party Data.
+As part of 4.30, IX will start to picki up FPD in the global FPD module, as well as continue to pick up IX bidder-specific FPD. Previous versions of IX Bid Adapter will only support the IX bidder-specific FPD.
+
+### Global FPD
+
+As of Prebid.js 4.30, use the more generic `ortb2` interface, which can be used for more than just First Party Data.
 
 The First Party Data feature allows publishers to specify key/value data in one place where each compatible bid adapter can read it.
 
@@ -379,7 +383,7 @@ Use the [`setBidderConfig()`](/dev-docs/publisher-api-reference.html#module_pbjs
 
 For more information about the standard or more detailed examples, refer to [First Party Data Feature](/features/firstPartyData.html).
 
-### Using versions prior to 4.30
+### IX bidder-specific FPD
 
 FPD allows you to specify key-value pairs that are passed as part of the
 query string to IX for use in Private Marketplace Deals which rely on query
@@ -409,7 +413,7 @@ The values can be updated at any time by calling `pbjs.setConfig` again. The
 changes will be reflected in any proceeding bid requests.
 
 {: .alert.alert-warning :}
-To continuing using First Party Data in IX deals, be sure to supply data using bidder-specific configuration. Global First Party Data is not yet supported in IX deals. Consult your IX representative with any questions.
+Continue to use IX bidder-specific First Party Data for IX deals. Global First Party Data is not yet supported in IX deals. Consult your IX representative with any questions.
 
 ## Setting a Server Side Timeout