After upgrade, unable to update ios platform

[kryptus36]

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• CLI: 6.1.2
• Cross-platform modules: 6.1.2
• Android Runtime: 6.1.2
• iOS Runtime: 6.1.0
• Plugin(s):
  "@nstudio/nativescript-checkbox": "^1.0.0",
  "@proplugins/nativescript-purchase": "^2.1.1",
  "nativescript-admob": "^4.0.0",
  "nativescript-pager": "^11.0.11",
  "nativescript-plugin-firebase": "^10.1.1",
  "nativescript-secure-storage": "^2.6.0",
  "nativescript-theme-core": "^2.0.24",
  "nativescript-ui-listview": "^7.1.0",
  "nativescript-ui-sidedrawer": "^7.0.4",

Describe the bug
Trying to upgrade nativescript-theme-core says it requires platform 6.1.1 of ios. When I run tns platform update ios I get:

The content of the current project file: /Volumes/projects/nativescript/bingoplus/platforms/ios/bingoplus.xcodeproj/project.pbxproj and the new project file: /var/folders/mb/zhlh7spj77q_07h0fg2vj5m80000gn/T/runtime-to-update119101-2958-mrdcxh.nsmqk/framework/__PROJECT_NAME__.xcodeproj/project.pbxproj is different.

To Reproduce
tns platform update ios

Expected behavior
Platform updates, and I can update tns-core-codules

I've tried deleting the platforms dir, it just reinstalls 6.1.0 for ios.

[kryptus36]

After finding NativeScript/nativescript-cli#4681 I see this is a duplicate