Retain Output on Stack-Update - amazon-web-services

Question

I wrote a Cloudformation template that creates a stack with a DynamoDB Table:
"FeedStageDynamoTable" : {
"Type" : "AWS::DynamoDB::Table",
"UpdateReplacePolicy" : "Retain",
"Properties" : {
"TableName" : { "Fn::Sub": [ "feed-${Year}-${Environment}-table", { "Year": {"Ref" : "BundleYear" }, "Environment" : {"Ref" : "DeployEnvironment"}} ]},
"AttributeDefinitions" : [
{"AttributeName" : "Guid", "AttributeType" : "S"}
],
"KeySchema" : [
{"AttributeName" : "Guid", "KeyType" : "HASH"}
],
"ProvisionedThroughput" : {
"ReadCapacityUnits" : "2",
"WriteCapacityUnits" : "2"
},
"StreamSpecification": {
"StreamViewType": "NEW_AND_OLD_IMAGES"
}
}
}
and an Output for the Table's Stream:
"Outputs" : {
"FeedStageTableStreamArn": {
"Description" : "The security group ID to use for public web servers",
"Value" : { "Fn::GetAtt" : ["FeedStageDynamoTable", "StreamArn"] },
"Export" : { "Name" : {"Fn::Sub": "${AWS::StackName}-FeedStageDynamoTableStreamArn" }}
},
The output is used by a lambda function from another template (for the second stack):
"NotifyWebConsumer" : {
"Type" : "AWS::Serverless::Function",
"Properties": {
"Environment": {
"Variables" : {
"EnvironmentCodename" : { "Fn::Sub": [ "${Environment}", { "Environment" : {"Ref" : "DeployEnvironment"}} ]}
}
},
"Handler": "AmazonServerlessStageWebUpdate::AmazonServerlessStageWebUpdate.Functions::NotifyWebConsumer",
"FunctionName": "NotifyWebConsumer",
"Runtime": "dotnetcore2.1",
"CodeUri": "",
"MemorySize": 256,
"Timeout": 30,
"Policies":[{ "Fn::ImportValue" : {"Fn::Sub" : "${DeployEnvironment}-LambdaExecutionPolicy"} }],
"Role":{"Fn::GetAtt": ["NotifyConsumerRole","Arn"]},
"Events": {
}
}
}
...
"EventSourceMapping": {
"Type": "AWS::Lambda::EventSourceMapping",
"Properties": {
"EventSourceArn": { "Fn::ImportValue" : {"Fn::Sub" : "StageEnvironment-FeedStageDynamoTableStreamArn"} },
"FunctionName" : {
"Fn::GetAtt": [
"NotifyWebConsumer", "Arn"
]
},
"StartingPosition" : "LATEST"
}
}
After I published both stacks I can not update the first one anymore, because the output stream is in use by the second stack. Now my question: is there a cloudformation property like "UpdateReplacePolicy": "Retain" for outputs? Or is there any other way to update the first stack without deleting the second one?