Sitemap node properties are lost when updating pages through the CMS

Reproduction path: 

• Open https://hap-15-2.eng02.bloomreach.cloud/cms/console/?1&logintype=local&path=/hst:hap/hst:configurations/hap/hst:workspace/hst:sitemap/container-walhalla and add Property refID 
• Then write changes to repository
• Open container-walhalla page in HAP in channel manager
• Open properties from page menu
• Change the name of the page and save
• Publish the channel with changes
• Check  https://hap-15-2.eng02.bloomreach.cloud/cms/console/?1&logintype=local&path=/hst:hap/hst:configurations/hap/hst:workspace/hst:sitemap/container-walhalla
• Expected: In console only the page name will change
• Actual: RefID property is missing

Reproduction video: https://drive.google.com/file/d/15b8E_n2kMBtqyEDXWfDdNGxgitAOgKwD/view?usp=sharing 

We often use refIds to link pages from different channels.
When the page name is updated or moved from the CMS, the refId property is lost.

1- Asign refId to a page:

2- Rename page throug CMS and publish

3- RefId is lost