Because we have externally hosted applications by vendors under specific sub-domains (vendor1.domain.org, vendor2.domain.org...), we would like to keep single certificates for these sub-domains while having all internally hosted applications in our environment managed by a wildcard certificate under the same *.domain.org domain name but on different servers (internal1.domain.org, internal2.domain.org...).
Is there any chance for the wildcard certificate creating a conflict with the other sub-domain single certificates already in place?