Wix to remove previous version that was installed with Bootstrapper from control panel - installation

Question

I've got "ABC 10.1" program version installed on computer allready and I would like to remove it on each newer ABC.msi installation (for example when ABC 10.2 is going to be installed).
So far I've used a BOOTSTRAPPER to install new versions and it worked like a charm (the previous version was uninstalled and removed from the control panel and newest was appearing in the control panel).
Right now I would like to use ABC.msi for installation and to not use the BOOTSTRAPPER, but when I use ABC.msi installer the previous one is not being removed from the control panel and I have two "ABCs" 10.1 and 10.2 versions in the control panel.
How can I remove ABC previous version that was installed by BOOTSTRAPPER during newest ABC.msi installation (and avoid duplicating ABC in Control Panel)?
Bundle.wxs
<Bundle
Name="$(var.ProductName)"
Version="$(var.ShowVersion)"
Manufacturer="ABC"
UpgradeCode="33312c8d-64f1-4a04-a98e-4aa692de6aaf"
IconSourceFile="$(var.BaseDir)\Setup\UI\ABC.ico"
Condition="((VersionNT = v6.1 AND ServicePackLevel >= 1) OR (VersionNT > v6.1)) AND (WixBundleInstalled = 0)">
<BootstrapperApplicationRef Id="WixStandardBootstrapperApplication.RtfLicense">
<bal:WixStandardBootstrapperApplication
LicenseFile="$(var.BaseDir)\Setup\UI\License.rtf"
LogoFile="$(var.BaseDir)\Setup\UI\OticonAppIcon.png"
SuppressOptionsUI="yes"
ShowVersion="yes"/>
</BootstrapperApplicationRef>
<Chain>
<!-- Install .Net 4.6.1 -->
<PackageGroupRef Id='NetFx461Redist'/>
<!-- my packages to install -->
<PackageGroupRef Id="InstallerPackages" />
</Chain>
</Bundle>
<Fragment>
<PackageGroup Id ="InstallerPackages" >
<MsiPackage SourceFile="$(var.OutDir)\ABC.MSI" />
<MsiPackage SourceFile="$(var.OutDir)\DatabaseInstallerABC.msi" />
</PackageGroup>
</Fragment>
productABC.wxs (the file that is creating ABC.msi) is as following:
<?xml version="1.0" encoding="UTF-8"?>
<?include .\defines.wxi ?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi" xmlns:netfx="http://schemas.microsoft.com/wix/NetFxExtension" xmlns:fire="http://schemas.microsoft.com/wix/FirewallExtension" xmlns:util="http://schemas.microsoft.com/wix/UtilExtension">
<Product Id="$(var.ProductCode)"
Codepage="1252" Language="1033"
Manufacturer="ABC" Name="$(var.ProductName)"
UpgradeCode="{3338CE6B-D733-41AF-830B-DCAFE2E0CD58}"
Version="$(var.ProductVersion)">
<Package Id="*"
Compressed="yes"
InstallerVersion="300"
Languages="1033"
Manufacturer="ABC"
Platform="x86" />
<Media Id="1"
Cabinet="media1.cab"
EmbedCab="yes" />
----some directories and components----
<MajorUpgrade
Schedule="afterInstallInitialize"
DowngradeErrorMessage="A later version of [ProductName] is already installed. Setup will now exit."
AllowSameVersionUpgrades="yes"/>
<InstallExecuteSequence>
<LaunchConditions After="AppSearch" />
<Custom Action="SetTargetDir" Before="CostFinalize"></Custom>
<Custom Action="SaveTargetDir" After="InstallValidate"></Custom>
</InstallExecuteSequence>
<WixVariable Id="WixUILicenseRtf" Value="$(var.BaseDir)\Setup\UI\License.rtf" />
<WixVariable Id="WixUIBannerBmp" Value="$(var.BaseDir)\Setup\UI\bannrbmp.bmp" />
<WixVariable Id="WixUIDialogBmp" Value="$(var.BaseDir)\Setup\UI\ABCbackground.bmp" />
</Product>
</Wix>

Answer 1

Generic answer: The wix bootstrapper is what writes the entry in the Control Panel for your "ABC 10.1" release. In order to remove that, your 10.2 release will need to have a custom action tell the previous bundle to uninstall itself ("previous-cached-bundle.exe /silent /uninstall" or something similar). Now, whether you tell the old bundle to remove itself first, or you allow your MSI to upgrade first is up to your own requirements.