diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index 693d3bf764..73378915d7 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -56,6 +56,8 @@
 - Fix: [#9240] Crash when passing directory instead of save file.
 - Fix: [#9293] Issue with the native load/save dialog.
 - Fix: [#9322] Peep crashing the game trying to find a ride to look at.
+- Fix: [#9402] Ad campaigns disappear when you save and load the game.
+- Fix: [#9411] Ad campaigns end too soon.
 - Fix: Guests eating popcorn are drawn as if they're eating pizza.
 - Fix: The arbitrary ride type and vehicle dropdown lists are ordered case-sensitively.
 - Improved: [#6116] Expose colour scheme for track elements in the tile inspector.
diff --git a/src/openrct2/actions/ParkMarketingAction.hpp b/src/openrct2/actions/ParkMarketingAction.hpp
index 8de0b7e87f..607d0c1249 100644
--- a/src/openrct2/actions/ParkMarketingAction.hpp
+++ b/src/openrct2/actions/ParkMarketingAction.hpp
@@ -71,6 +71,7 @@ public:
         MarketingCampaign campaign{};
         campaign.Type = _type;
         campaign.WeeksLeft = _numWeeks;
+        campaign.Flags = MarketingCampaignFlags::FIRST_WEEK;
         if (campaign.Type == ADVERTISING_CAMPAIGN_RIDE_FREE || campaign.Type == ADVERTISING_CAMPAIGN_RIDE)
         {
             campaign.RideId = _item;
diff --git a/src/openrct2/rct2/S6Exporter.cpp b/src/openrct2/rct2/S6Exporter.cpp
index a9e4a79cd2..1772a19fb2 100644
--- a/src/openrct2/rct2/S6Exporter.cpp
+++ b/src/openrct2/rct2/S6Exporter.cpp
@@ -794,7 +794,7 @@ void S6Exporter::ExportMarketingCampaigns()
     std::memset(_s6.campaign_ride_index, 0, sizeof(_s6.campaign_ride_index));
     for (const auto& campaign : gMarketingCampaigns)
     {
-        _s6.campaign_weeks_left[campaign.Type] = campaign.WeeksLeft;
+        _s6.campaign_weeks_left[campaign.Type] = campaign.WeeksLeft | CAMPAIGN_ACTIVE_FLAG;
         if (campaign.Type == ADVERTISING_CAMPAIGN_RIDE_FREE || campaign.Type == ADVERTISING_CAMPAIGN_RIDE)
         {
             _s6.campaign_ride_index[campaign.Type] = campaign.RideId;