Does switching CSP partners affect my Azure support plan or ticket history?

Your Azure support plan (if purchased through CSP, bundled with your partner's support) is tied to your partner relationship, so switching partners generally means transitioning to your new partner's support arrangement going forward. Historical support tickets with your previous partner typically aren't transferred automatically, since they were handled through that partner's own support systems rather than stored centrally by Microsoft.

If ongoing/unresolved issues are a concern, it's worth explicitly handing those off as part of the transition conversation with both partners.